Question Set B

CBSE 10th Science Metals and Non-Metals Sample Question Papers Study Material - QB365

Download CBSE Class 10th Standard CBSE Science question papers, sample papers, important questions, and previous year solved papers in PDF format. Get free study materials, NCERT solutions, and exam preparation resources for Class 10th Standard CBSE Science

Questions:

Multiple Choice Question

80 x 1 = 80

Water in the root enters due to

(a)

the function of the root to absorb water

(b)

difference in the concentration of ions between the root and the soil

(c)

excess water present in the soil

(d)

diffusion of water in the roots

Which of the following statement(s) is (are) true about human heart?
(i) Right atrium receives oxygenated blood from lungs through pulmonary artery
(ii) Left atrium transfer oxygenated blood to left ventricle which sends it to various parts of the body.
(iii) Right atrium receives deoxygenated blood from different parts of the body through vena cava.
(iv) Left atrium transfers oxygenated blood to aorta which sends to different parts of the body.

(a)

Only (ii)

(b)

(i) and (iv)

(c)

(ii) and (iii)

(d)

(ii) and (iv)

Which of the following statements are true about respiration?
(i) During inhalation, ribs move inward and diaphragm is raised.
(ii) In the alveoli, exchange of gases takes place, i.e. oxygen from alveolar air diffuses into blood and carbon dioxide from blood into alveolar air.
(iii) Haemoglobin has greater affinity for carbon dioxide than oxygen.
(iv) Alveoli increases surface area for exchange of gases.

(a)

(i) and (iv)

(b)

(ii) and (iii)

(c)

(i) and (iii)

(d)

(ii) and (iv)

The energy released during cellular respiration is used to synthesise

(a)

ribosomes

(b)

RBC

(c)

ATP

(d)

mitochondria

In human alimentary canal, the specific enzyme/ juice secreted in locations (i), (ii) and (iii) are

(a)

(i) Amylase (ii) Pepsin (ii) Bile

(b)

(i) Amylase (i) Bile (ii) Trypsin

(c)

(i) Lipase (ii) Amylase (iii) Pepsin

(d)

(i) Trypsin (ii) Bile (i) Amylase

A cross between two tall pea plants resulted in offsprings having a few dwarf plants. The gene-combination of the parental plants must be

(a)

Tt and Tt

(b)

Tt and tt

(c)

TT and tt

(d)

TT and Tt

Consider the following two statements
(i) The trait that expresses itself in F₁-generation.
(ii) The trait that keeps on passing from one generation to another.
The appropriate terms for the statements (i) and (ii) respectively are

(a)

(i)	(ii)
Recessive trait,	Dominant trait

(b)

(i)	(ii)
Dominant trait,	Recessive trait

(c)

(i)	(ii)
Dominant trait,	Inherited trait

(d)

(i)	(ii)
Recessive trait,	Inherited trait

The graph given below shows the blood glucose level following a glucose tolerance test. Observe the graph carefully and choose the correct statement with regard to it.

(a)

There is an initial rise in the glucose at the start of the test

(b)

The level of glucose falls earlier for the healthy patients after 50 minutes, but later (i.e. after 100 mins.) for diabetic patient

(c)

Diabetic patient has higher initial glucose concentration

(d)

All of the above

Ankit brought some seeds and allowed them to germinate in a pot and kept that pot in some box made up of a cardboard opened from one side The box was allowed to be kept in such a manner that the open side of the box faces the sunlight near the window. After 3-4 days he observes the shoot bend towards the light as shown in the figure below.

What type of tropism does the above situation prodicts?

(a)

Geotropism

(b)

Phototropism

(c)

Chemotropism

(d)

Hydrotropism

10.

The image of a candle flame formed by a mirror is obtained on a screen placed on the same side of the mirror. According to new cartesian sign convention, If the image is three times the size of the flame, then the mirror is _________

(a)

concave and magnification is +3

(b)

concave and magnification is -3

(c)

convex and magnification is -3

(d)

convex and magnification is +3

11.

Pratyush took sulphur powder on a spatula and heated it. He collected the gas evolved by inverting a test tube over it as shown in figure. The gas evolved is

(a)

O₂

(b)

SO₂

(c)

CO₂

(d)

H₂ and SO₂

12.

A piece of zinc (Zn)-a reactive metal-was dropped into a test tube containing a substance. A zinc salt was formed and hydrogen gas was liberated. This is shown in the equation below.
Zn⁺ \(\rightarrow\) Zinc salt + H₂ gas
Which of the following can be the substance that zinc was dropped into?
P. water
Q. hydrochloric acid
R. a solution of a zinc salt

(a)

Only P

(b)

Only Q

(c)

Only R

(d)

Either P or R

13.

Which of the following metals, do not corrode in moist air?

(a)

Copper

(b)

Iron

(c)

Gold

(d)

Silver

14.

When a ray of light passes through a glass prism, it suffers two refractions. During these refractions, the ray bends

(a)

away from the base in both cases

(b)

towards the base in both cases

(c)

towards the base in first case and away from the base in second case

(d)

away from the base in first case and towards the base in second case

15.

In human eye the part which allows light to enter into the eye is

(a)

retina

(b)

pupil

(c)

eye lens

(d)

cornea

16.

In domestic electric circuits, the wiring with 15 A current rating is for the electric devices which have

(a)

higher power ratings such as geyser

(b)

lower power ratings such as fan

(c)

metallic bodies and low power ratings

(d)

non-metallic bodies and low power ratings

17.

A chemical compound used in glass, soap and paper industries is

(a)

washing soda

(b)

baking soda

(c)

bleaching powder

(d)

common salt

18.

The following reactions are carried out in open vessels.
(P) \(2 \mathrm{Cu}(\mathrm{s})+\mathrm{O}_2(\mathrm{~g}) \xrightarrow{\text { Heat }} 2 \mathrm{CuO}(\mathrm{s})\)
(Q) \(\mathrm{Zn}(s)+\mathrm{CuSO}_4(a q) \longrightarrow \mathrm{ZnSO}_4(a q)+\mathrm{Cu}(s)\)
(R) \(2 \mathrm{FeSO}_4(\mathrm{~s}) \xrightarrow{\text { Heat }} \mathrm{Fe}_2 \mathrm{O}_3(\mathrm{~s})+\mathrm{SO}_2(\mathrm{~g})+\mathrm{SO}_3(\mathrm{~g})\)
Which of the following correctly shows, if the weight of the reaction vessel and contents increases, decreases or remains the same after the reaction as compared to before the reaction?

(a)

Reaction P	Reaction Q	Reaction R
decreases	remains the same	increases

(b)

Reaction P	Reaction Q	Reaction R
remains the same	increases	increases

(c)

Reaction P	Reaction Q	Reaction R
increases	decreases	increases

(d)

Reaction P	Reaction Q	Reaction R
increases	remains the same	decreases

19.

To balance the following chemical equation the values of x and y should respectively be
2NaOH + xAl₂O₃ \(\rightarrow\) yNaAIO₂ + H₂O

(a)

1, 4

(b)

1, 2

(c)

2, 4

(d)

2, 3

20.

A house is fitted with 10 tubes each of 40 W If all tubes are lighted for 10 hours and if the cost of one unit of electricity energy is Rs 2.50 the total cost of electricity consumption is

(a)

Rs 100

(b)

Rs 20

(c)

Rs 25

(d)

Rs 10

21.

A current of 2 A passes through a conductor and produces 80 joules of heat in 10 seconds. The resistance of the conductor is

(a)

0.5 \(\Omega \)

(b)

2\(\Omega \)

(c)

4\(\Omega \)

(d)

20\(\Omega \)

22.

Two metallic wires A and B are connected in parallel. Wire A has length 'l' and radius 'r' and wire B has a length '2l' and radius '2r'. Then the ratio of total resistance of parallel combination and the resistance of wire A is

(a)

1:2

(b)

1:3

(c)

1:4

(d)

1:5

23.

What sets electron into motion in an electric circuit

(a)

Battery/cell

(b)

Resistor

(c)

Rheostat

(d)

Ammeter

24.

The component of white light with greatest wavelength is

(a)

Violet

(b)

Red

(c)

Green

(d)

Blue

25.

The coloured light that refracts most while passing through a prism is

(a)

Yellow

(b)

Violet

(c)

Blue

(d)

Red

26.

The light sensitive cell present on retina and is sensitive to the intensity of light is:

(a)

cones

(b)

rods

(c)

both rods and cones

(d)

none of these

27.

The power of a lens is + 1.6 D. The nature of lens is

(a)

Convex lens

(b)

Concave lens

(c)

both concave an convex

(d)

none of these

28.

Image formed by plane mirror is

(a)

real and erect

(b)

real and inverted

(c)

virtual and erect

(d)

virtual and inverted

29.

Fossils helps

(a)

To study evolution

(b)

To understand climatic conditions in past

(c)

For a hierarchy of organisms (classification

(d)

They help in all the above

30.

With whom we associate theory of evolution

(a)

Charles Darwin

(b)

Mendel.

(c)

Stanley Miller

(d)

Harold Urey

31.

There is an inbuilt tendency of variation during reproduction because of-
(i) Errors in DNA copying (ii) Sexual reproduction

(a)

only (i)

(b)

only (ii)

(c)

both (i) and (ii)

(d)

none of them

32.

Who have a perfect pair of sex chromosomes

(a)

Girls only

(b)

Boys only

(c)

Both girls and boys

(d)

It depends on many other factors

33.

A section of DNA providing information for one protein is called

(a)

Nucleus

(b)

Chromosomes

(c)

Trait

(d)

Gene

34.

Which one is a possible progeny in F₂ generation of pure breed tall plant with round seed and short plant with wrinkled seeds?

(a)

Tall plant with round seeds

(b)

Tall plant with wrinkled seeds

(c)

Short plant with round seed

(d)

All of the above

35.

Unisexual flowers contain

(a)

Both stamen and carpel

(b)

Only stamen

(c)

Only carpel

(d)

Either stamen or carpel

36.

What is the puberty age in human males?

(a)

8-10

(b)

10-12

(c)

12-14

(d)

14-16

37.

The simple animals like Plana ria can be cut into a number of pieces and each piece grows into a complex organism. What is the process known as?

(a)

Budding

(b)

Fragmentation

(c)

Spore formation

(d)

Regeneration

38.

Two plant hormones which regulate growth of plant are:

(a)

Cytokinin and Auxin

(b)

Abscisic acid and Auxin

(c)

Auxin and Gibberellin

(d)

All of these

39.

Receptors are specialised tips of

(a)

Muscle cells

(b)

Glands

(c)

Sense organs

(d)

Nerve cells

40.

Separation of right and left side of the heart is to

(a)

Ensure proper and efficient working of heart

(b)

Avoid any blockage

(c)

Allow highly efficient supply of oxygen

(d)

All of these

41.

During smelting, an additional substance is added which combines with impurities to form a fusible product known as

(a)

slag

(b)

mud

(c)

gangue

(d)

flux

42.

The pH of human blood varies between

(a)

7.12 to 7.36

(b)

7.36 to 7.42

(c)

7.42 to 7.50

(d)

7.25 to 7.42

43.

If tartaric acid is not added in baking powder, the cake will taste bitter due to the presence of

(a)

sodium hydrogen carbonate

(b)

sodium carbonate

(c)

carbon dioxide

(d)

same unreacted tartaric acid

44.

The composition of aqua regia is

(a)

conc. H₂SO₄ and conc. HCl in ratio of 1 : 3

(b)

conc. HNO₃ and cone. HCI in ratio of 1 : 3

(c)

conc. HNO₃ and cone, HCI in ratio of 3 : 1

(d)

conc. H₂SO₄ and cone. HNO₃ is ratio of 3 : 1

45.

In which of the following pairs, both are acidic salts?

(a)

KCI, KNO₃

(b)

Na₂SO₄, K₂SO₄

(c)

CH₃COONa, K₂CO₃

(d)

CuSO₄, AgNO₃

46.

Identify the following type of reaction:
2KClO₃ \(\quad \overset { heat }{ \underset { catalyst }{ \longrightarrow } } \) 2KCl(s) + 3O₂(g)

(a)

It is a combination reaction.

(b)

It is a decomposition reaction and is accompanied by release of heat

(c)

It is a photochemical decomposition reaction and exothermic in nature.

(d)

It is a decomposition reaction and is endothermic in nature

47.

Reddish-brown copper metal forms a black solid on combustion. Which of the following statement is incorrect?

(a)

Black solid is CuO

(b)

The reaction is a redox reaction

(c)

The reaction is a precipitation reaction .

(d)

Copper is being oxidised.

48.

When crystals of lead nitrate are heated strongly in a dry test tube

(a)

crystals immediately melt

(b)

a brown residue is left

(c)

white fumes appear in the tube

(d)

a yellow residue is left

49.

A prism ABC (with BC as base) is placed in different orientations. A narrow beam of white light is incident on the prism as shown in Figure. In which of the following cases, after dispersion, the third colour from the top corresponds to the colour of the sky?

(a)

(i)

(b)

(ii)

(c)

(iii)

(d)

(iv)

50.

Which of the following ray diagram is correct for the ray of light incident on a lens shown in Figure?

(a)

Fig. A

(b)

Fig. B

(c)

Fig. C

(d)

Fig. D

51.

The path of a ray of light coming from air passing through a rectangular glass slab traced by four students are shown as A, B, C and D in Figure. Which one of them is correct?

(a)

(b)

(c)

(d)

52.

A beam of light is incident through the holes on side A and emerges out of the holes on the other face of the box as shown in the figure. Which of the following could be inside the box?

(a)

Concave lens

(b)

Rectangular glass slab

(c)

Prism

(d)

Convex lens

53.

Beams of light are incident through the holes A and B and emerge out of box through the holes C and D respectively as shown in the Figure. Which of the following could be inside the box?

(a)

A rectangular glass slab

(b)

A convex lens

(c)

A convex lens

(d)

A prism

54.

A student carries out an experiment and plots the V-I graph of three samples of nichrome wire with resistances R₁, R₂ and R₃ respectively. Which of the following is true?

(a)

R₁ = R₂ = R₃

(b)

R₁ > R₂ > R₃

(c)

R₃ > R₂ > R₁

(d)

R₂ > R₃ > R₁

55.

The danger signals installed at the top of tall buildings are red in colour. These can be easily seen from a distance because among all other colours, the red light

(a)

is scattered the most by smoke or fog

(b)

is scattered the least by smoke or fog

(c)

is absorbed the most by smoke or fog

(d)

moves faster in air

56.

Twinkling of stars is due to atmospheric

(a)

dispersion of light by water droplets

(b)

refraction of light by different layers of varying refractive indices

(c)

scattering of light by dust particles

(d)

internal reflection of light by clouds

57.

A child is standing in front of a magic mirror. She finds the image of her head bigger, the middle portion of her body of the same size and that of the legs smaller. The following is the order of combinations for the magic mirror from the top.

(a)

Plane, convex and concave

(b)

Convex, concave and plane

(c)

Concave, plane and concave

(d)

Convex, plane and concave

58.

In human males, the testes lie in the scrotum because it helps in the

(a)

process of mating

(b)

formation of sperm

(c)

easy transfer of gametes

(d)

all the above

59.

Which of the following statement are true for flowers?
(i)Flowers are always bisexual
(ii)They are the sexual reproductive organs
(iii)They are produced in all groups of plants
(iv)After fertilisation they give rise to fruits

(a)

(i) and (iv)

(b)

(ii) and (iii)

(c)

(i) and (iii)

(d)

(ii) and (iv)

60.

The number of chromosomes in parents and offspring of a particular species remains constant due to

(a)

doubling of chromosomes after zygote formation

(b)

halving of chromosomes during gamete formation

(c)

doubling of chromosomes after gamete formation

(d)

halving of chromosomes after gamete formation

61.

In a flower, the parts that produce male and female gametes (germ cells) are

(a)

stamen and anther

(b)

filament

(c)

anther and ovary

(d)

stamen and style

62.

In this list of organisms given below, those that reproduce by the asexual method are
(i)banana
(ii)dog
(iii)yeast
(iv)amoeba

(a)

(ii) and (iv)

(b)

(i), (iii) and (iv)

(c)

(i) and (iv)

(d)

(ii), (iii) and (iv)

63.

Which organelle of the cell is known as powerhouse?

(a)

ATP

(b)

Golgi bodies

(c)

Mitochondria

(d)

Nucleus

64.

Choose the form in which mot plants absorb nitrogen
(i)Proteins
(ii)Nitrates and Nitrites
(iii)Urea
(iv)Atmospheric nitrogen

(a)

(i) and (ii)

(b)

(ii) and (iii)

(c)

(iii) and (iv)

(d)

(i) and (iv)

65.

Which of the following can undergo a chemical reaction?

(a)

MgSO₄ + Fe

(b)

ZnSO₄ + Fe

(c)

MgSO₄ + Pb

(d)

CuSO₄ + Fe

66.

Which among the following alloys contain mercury as one of its constituents?

(a)

Stainless steel

(b)

Alnico

(c)

Solder

(d)

Zinc amalgam

67.

Which of the following represents voltage?

(a)

\(\frac { Work\ done }{ current\ \times \ time } \)

(b)

Work done \(\times\) charge

(c)

\(\frac { Work\ done \ \times \ time }{ current } \)

(d)

Work done \(\times\) charge \(\times\) time

68.

Which one of the following four metals would be displaced from the solution of its salts by other three metals?

(a)

(b)

(c)

(d)

69.

If copper is kept open in air, it slowly loses its shining brown surface and gains a green coating. It is due to the formation of

(a)

CuSO₄

(b)

CuCO₃

(c)

Cu(NO₃)₂

(d)

CuO

70.

Involuntary actions in the body are controlled by

(a)

Medulla in forebrain

(b)

Medulla in midbrain

(c)

Medulla in hindbrain

(d)

Medulla in spinal cord

71.

Growth of pollen tubes towards ovules is an example of

(a)

Hydrotropism

(b)

Chemotropism

(c)

Geotropism

(d)

Phototropism

72.

Spinal cord originates from

(a)

Cerebrum

(b)

Medulla

(c)

Pons

(d)

Cerebellum

73.

Electrical impulse travels in a neuron from

(a)

Dendrite \(\rightarrow\) axon \(\rightarrow\) axonal end \(\rightarrow\) cell body

(b)

Cell body \(\rightarrow\) dendrite \(\rightarrow\) axon \(\rightarrow\) axonal end

(c)

Dendrite \(\rightarrow\) cell body \(\rightarrow\) axon \(\rightarrow\) axonal end

(d)

Axonal end \(\rightarrow\) axon \(\rightarrow\) cell body \(\rightarrow\) dendrite

74.

The commonly used safety fuse wire is made of

(a)

Lead

(b)

Copper

(c)

Nickel

(d)

An alloy of tin and lead

75.

When a magnesium ribbon is burnt in air, the ash formed is

(a)

pink

(b)

white

(c)

black

(d)

yellow

76.

In the reaction, SO₂(g) + 2H₂S(g) \(\rightarrow\) 2H₂O(l) + S(s), the reducing agent is

(a)

SO₂

(b)

H₂S

(c)

H₂O

(d)

77.

Solid calcium oxide reacts vigorously with water to form calcium hydroxide accompanied by liberation of heat. This process is called slaking of lime. Calcium hydroxide dissolves in water to form its solution called lime water. Which among the following is (are) true about slaking of lime and the solution formed?
(i) It is an endothermic reaction
(ii) It is an exothermic reaction
(iii) The pH of the resulting solution will be more than seven
((iv) The pH of the resulting solution will be less than seven

(a)

(i) and (ii)

(b)

(ii) and (iii)

(c)

(i) and (iv)

(d)

(iii) and (iv)

78.

Which of the following substance will not give carbon dioxide on treatment with dilute acid?

(a)

Marble

(b)

Limestone

(c)

Baking soda

(d)

Lime

79.

Which of the following statements is correct about an aqueous solution of an acid and of a base?
(i) Higher the pH, stronger the acid
(ii) Higher the pH, weaker the acid
(iii) Lower the pH, stronger the base
(iv) Lower the pH, weaker the base

(a)

(i) and (iii)

(b)

(ii) and (iii)

(c)

(i) and (iv)

(d)

(ii) and (iv)

80.

Which of the following salts does not contain water of crystallisation?

(a)

Blue vitriol

(b)

Baking soda

(c)

Washing soda

(d)

Gypsum

Visit QB365-SLMS - https://www.qb365.in/slms/

Answers Key:

Multiple Choice Question

80 x 1 = 80

(b)
difference in the concentration of ions between the root and the soil

(d)
(ii) and (iv)

(a)
(i) Amylase (ii) Pepsin (ii) Bile

(a)
Tt and Tt

(d)
All of the above

(b)
Phototropism

10.

(d)
convex and magnification is +3

11.

(b)
SO₂

12.

(b)
Only Q

13.

14.

(b)
towards the base in both cases

15.

(b)
pupil

16.

(a)
higher power ratings such as geyser

17.

(a)
washing soda

18.

(a)

Reaction P Reaction Q Reaction R

decreases remains the same increases

19.

(b)
1, 2

20.

(d)
Rs 10

21.

22.

(a)
1:2

23.

(a)
Battery/cell

24.

(b)
Red

25.

(b)
Violet

26.

(b)
rods

27.

(a)
Convex lens

28.

29.

(d)
They help in all the above

30.

(a)
Charles Darwin

31.

(b)
only (ii)

32.

(a)
Girls only

33.

(d)
Gene

34.

(d)
All of the above

35.

(d)
Either stamen or carpel

36.

37.

(d)
Regeneration

38.

(d)
All of these

39.

(d)
Nerve cells

40.

41.

(a)
slag

42.

(b)
7.36 to 7.42

43.

(b)
sodium carbonate

44.

(b)
conc. HNO₃ and cone. HCI in ratio of 1 : 3

45.

(d)
CuSO₄, AgNO₃

46.

(d)
It is a decomposition reaction and is endothermic in nature

47.

48.

(b)
a brown residue is left

49.

(b)
(ii)

50.

(a)
Fig. A

51.

(b)
B

52.

(d)
Convex lens

53.

(a)
A rectangular glass slab

54.

55.

(b)
is scattered the least by smoke or fog

56.

(b)
refraction of light by different layers of varying refractive indices

57.

58.

(b)
formation of sperm

59.

(d)
(ii) and (iv)

60.

(b)
halving of chromosomes during gamete formation

61.

62.

(b)
(i), (iii) and (iv)

63.

64.

(b)
(ii) and (iii)

65.

(d)
CuSO₄ + Fe

66.

(d)
Zinc amalgam

67.

(a)
\(\frac { Work\ done }{ current\ \times \ time } \)

68.

(d)
Cu

69.

(b)
CuCO₃

70.

71.

(b)
Chemotropism

72.

(b)
Medulla

73.

74.

(a)
Lead

75.

(b)
white

76.

(b)
H₂S

77.

(b)
(ii) and (iii)

78.

(d)
Lime

79.

80.

(b)
Baking soda

CBSE 10th Science Metals and Non-Metals Sample Question Papers Study Material - QB365 Set B

QB365 Student Learing Managemnet System

Std: 10th Standard CBSE - Science

chapter: Metals and Non-Metals - Sample Question Papers

Visit QB365-SLMS - https://www.qb365.in/slms/ Complete Questions and Answers

Questions:

Visit QB365-SLMS - https://www.qb365.in/slms/

Answers Key:

NEW MCQ Practice Test - CBSE Class 10

Science CBSE Class 10 MCQ Practice Test

CBSE Class 10 MCQ Practice Test

10th Standard CBSE Study Materials