#### All Chapter 1 Marks

10th Standard

Reg.No. :
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Science

Time : 01:30:00 Hrs
Total Marks : 92
92 x 1 = 92
1. Inertia of a body depends on

(a)

weight of the object

(b)

acceleration due to gravity of the planet

(c)

mass of the object

(d)

Both a & b

2. Impulse is equals to

(a)

rate of change of momentum

(b)

rate of force and time

(c)

change of momentum

(d)

rate of change of mass

3. The act of cleaning a carpet by heating it with a stick is an example for inertia of

(a)

motion

(b)

direction

(c)

rest

(d)

momentum

4. What would happen, if the force of gravity disappears suddenly on earth?

(a)

All objectswould move in a rapid whirl wing

(b)

All object will float

(c)

not possible

(d)

cannot say

5. The eye defect ‘presbyopia’ can be corrected by

(a)

convex lens

(b)

concave lens

(c)

convex mirror

(d)

Bi focal lenses

6. If VB, VG, VR be the velocity of blue, green and red light respectively in a glass prism, then which of the following statement gives the correct relation?

(a)

VB = VG = VR

(b)

VB > VG >VR

(c)

VB < VG < VR

(d)

VB < VG > VR

7. If the energy of the incident and scattered beam of light are same, then it is called ______ scattering

(a)

Ray light

(b)

Inelastic

(c)

Mie

(d)

Elastic

8. The distance below the lens and focus is called

(a)

pole

(b)

(c)

focal length

(d)

principal axis

9. If a substance is heated or cooled, the linear expansion occurs along the axis of

(a)

X or –X

(b)

Y or –Y

(c)

both (a) and (b)

(d)

(a) or (b)

10. Temperature is the average ______ of the molecules of a substance

(a)

difference in K.E and P.E

(b)

sum of P.E and K.E

(c)

difference in T.E and P.E

(d)

difference in K.E and T.E

11. Which of the following has the fastest process of heat transfer?

(a)

Conduction

(b)

convection

(c)

(d)

all the above

12. At what temperature are Celsius and Fahrenheit equal

(a)

40°

(b)

-40°

(c)

00

(d)

100°

13. In a simple circuit, why does the bulb glow when you close the switch?

(a)

The switch produces electricity

(b)

Closing the switch completes the circuit.

(c)

Closing the switch breaks the circuit.

(d)

The bulb is getting charged.

14. Kilowatt hour is the unit of

(a)

resistivity

(b)

conductivity

(c)

electrical energy

(d)

electrical power

15. The relation between potential difference (V) and current (I) was discovered by:

(a)

Volt

(b)

Ohm

(c)

Newton

(d)

Ampere

16. If two unequal resistors connected in parallel then.

(a)

The voltage is same in both resistor

(b)

The current is same in both resistor

(c)

The voltage is larger in one of the resistor

(d)

The current is large in one of the resistor

17. Velocity of sound in a gaseous medium is 330 m s-1. If the pressure is increased by 4 times without causing a change in the temperature, the velocity of sound in the gas is

(a)

330 m s-1

(b)

660 m s-1

(c)

165 ms-1

(d)

990 ms-1

18. The sound waves are reflected from an obstacle into the same medium from which they were incident. Which of the following changes?

(a)

speed

(b)

frequency

(c)

wavelength

(d)

none of these

19. The pitch of sound depends on

(a)

frequency

(b)

amplitude

(c)

both

(d)

none

20. Bats deflect from the obstacles in their path by receiving the reflected _______ waves.

(a)

(b)

ultrasonic

(c)

electromagnetic

(d)

infrasonic

(a)

(b)

(c)

(d)

a & c

22. ____________ isotope is used for the treatment of cancer.

(a)

(b)

(c)

(d)

23. The control rod in a nuclear reactor is made of

(a)

uranium

(b)

(c)

graphite

(d)

plutonium

24. ૪ rays are ________ in charge.

(a)

positive

(b)

negative

(c)

neutral

(d)

none

25. Th e volume occupied by 4.4 g of CO2 at S.T.P

(a)

22.4 litre

(b)

2.24 litre

(c)

0.24 litre

(d)

0.1 litre

26. The volume occupied by 1 mole of a diatomic gas at S.T.P is

(a)

11.2 litre

(b)

5.6 litre

(c)

22.4 litre

(d)

44.8 litre

27. Identify the 'hetero nuclear tri atomic molecule' among the following.

(a)

P4

(b)

H2SO4

(c)

CO2

(d)

O3

28. Atomicity of Sulphur is

(a)

1

(b)

2

(c)

4

(d)

8

29. _____ group contains the member of halogen family.

(a)

17th

(b)

15th

(c)

18th

(d)

16th

30. In the alumino thermic process the role of Al is _____.

(a)

oxidizing agent

(b)

reducing agent

(c)

hydrogenating agent

(d)

sulphurising agent

31. Which of the following is the pair of shortest and longest periods in the modern periodic table?

(a)

1st, 2nd

(b)

2nd,3rd

(c)

5th, 7th

(d)

1th,6th

32. The process of extracting the ore from the earth's crust is ____________

(a)

Metallurgy

(b)

Mining

(c)

Smelting

(d)

Leaching

33. The number of components in a binary solution is _____________

(a)

2

(b)

3

(c)

4

(d)

5

34. Which of the following is hygroscopic in nature?

(a)

ferric chloride

(b)

copper sulphate penta hydrate

(c)

silica gel

(d)

none of the above

35. Solubility of a solute is governed by

(a)

nature of solute and solvent

(b)

temperature

(c)

pressure

(d)

all the above

36. Which of the following is a saturated solution?

(a)

5g NaCI in 100g water

(b)

109 NaCI in 100g water

(c)

20g NaCI in 100g water

(d)

36g NaCI in 100g water

37. Photolysis is a decomposition reaction caused by

(a)

heat

(b)

electricity

(c)

light

(d)

mechanical energy

38. The pH of a solution is 3. Its [OH–] concentration is

(a)

1 × 10–3 M

(b)

3M

(c)

1 × 10–11 M

(d)

11 M

39. Ionic product of water is expressed

(a)

Kw = [Hp+] [OH-]

(b)

Kw = [H+] [OH-]

(c)

both (a) and (b)

(d)

neither (a) nor (b)

40. Copper displaces - metal from its solution.

(a)

Zn

(b)

AI

(c)

Ag

(d)

all the above

41. The IUPAC name of an organic compound is 3-Methyl butan-1-ol. What type compound it is?

(a)

Aldehyde

(b)

Carboxylic acid

(c)

Ketone

(d)

Alcohol

42. Rectified spirit is an aqueous solution which contains about _______ of ethanol

(a)

95.5 %

(b)

75.5 %

(c)

55.5 %

(d)

45.5 %

43. Which of the following is formed when soap water acts on clothes to remove dirt or grease?

(a)

acetic acid

(b)

Micelle

(c)

Ethyl alcohol

(d)

all the above

44. The organic acid present in Vinegar is ___________ acid.

(a)

methanoic

(b)

ethanoic

(c)

Propanoic

(d)

Butanoic

45. Casparian strips are present in the _____________ of the root.

(a)

cortex

(b)

pith

(c)

pericycle

(d)

endodermis

46. Kreb’s cycle takes place in

(a)

chloroplast

(b)

mitochondrial matrix

(c)

stomata

(d)

inner mitochondrial membrane

47. In leech locomotion is performed by

(a)

Anterior sucker

(b)

Posterior sucker

(c)

Setae

(d)

None of the above

48. Mammals are ______________ animals.

(a)

Cold blooded

(b)

Warm blooded

(c)

Poikilothermic

(d)

All the above

49. The number of cranial and spinal nerves in rabbit are_______ respectively

(a)

11 and 36

(b)

12 and 37

(c)

12 and 36

(d)

10 and 37

50. The urinogenital canal of female rabbit is formed by union of_________

(a)

urethra and vagina

(b)

(c)

(d)

51. Active transport involves

(a)

movement of molecules from lower to higher concentration

(b)

expenditure of energy

(c)

(d)

all of the above

52. Which is the sequence of correct blood flow

(a)

ventricle - atrium - vein - arteries

(b)

atrium - ventricle - veins - arteries

(c)

atrium - ventricle - arteries - vein

(d)

ventricles - vein - atrium - arteries

53. Persons with __________blood group can receive blood from 'AB' group individuals

(a)

'A' only

(b)

Bonly

(c)

AB and 0

(d)

A, B,AB and 0

54. Normal pulse rate ranges from________

(a)

80-90/min

(b)

70 -90/min

(c)

50 - 60 / min

(d)

70 - 80/ min

55. The neurons which carries impulse from the central nervous system to the muscle fibre.

(a)

afferent neurons

(b)

association neuron

(c)

efferent neuron

(d)

unipolar neuron

56. Node of Ranvier is found in

(a)

muscles

(b)

axons

(c)

dendrites

(d)

cyton

57. A human brain is formed of ______ main parts.

(a)

three

(b)

four

(c)

two

(d)

six

58. _____ second largest part of the brain formed of two large sized hemispheres.

(a)

Cerebellum

(b)

Cerebrum

(c)

Thalamus

(d)

Diencephalon

59. Avena coleoptile test was conducted by

(a)

Darwin

(b)

N. Smit

(c)

Paal

(d)

F.W. Went

60. Which one is referred as “Master Gland”?

(a)

Pineal gland

(b)

Pituitary gland

(c)

Thyroid gland

(d)

61. Premature shedding is caused by ______

(a)

auxin

(b)

ethylene

(c)

ABA

(d)

gibberellin

62. _____ is a natural Auxin.

(a)

Phenyl Acetic Acid

(b)

Indole 3 Butyric Acid

(c)

α - Naphthalene Acetic Acid

(d)

Indole - 3- Propionic Acid

63. Syngamy results in the formation of____________

(a)

Zoospores

(b)

Conidia

(c)

Conidia

(d)

Chlamydospores

64. What is true of gametes?

(a)

They are diploid

(b)

(c)

They produce hormones

(d)

65. The process of spermatogenesis takes place inthe___________

(a)

Sertolicel cells

(b)

Seminiferoustubules

(c)

Leydigcells

(d)

Centrioles

66. The fertilized egg becomes implanted in about_______________ after fertilization

(a)

5-7days

(b)

5-6days

(c)

6 - 7 days

(d)

5 - 8 days

67. Okasaki fragments are joined together by ___________________.

(a)

Helicase

(b)

DNA polymerase

(c)

RNA primer

(d)

DNA ligase

68. The loss of one or more chromosome in a ploidy is called_____________.

(a)

Tetraploidy

(b)

Aneuploidy

(c)

Euploidy

(d)

polyploidy

69. Down's syndrome is a case of___________

(a)

Euploidy

(b)

Deletion

(c)

Translocation

(d)

Aneuploidy

70. In human,each cell normally consists _________of chromosomes.

(a)

23 pairs

(b)

22 pairs

(c)

20 pairs

(d)

12 pairs

71. Paleontologists deal with

(a)

Embryological evidences

(b)

Fossil evidences

(c)

Vestigial organ evidences

(d)

All the above

72. The term Ethnobotany was coined by

(a)

Khorana

(b)

J.W. Harsbberger

(c)

Ronald Ross

(d)

Hugo de Vries

73. Ancon sheep is an example of _________.

(a)

vestigial organ

(b)

discontinuous variation

(c)

acquired character

(d)

natural selection

74. The degenerated wing of ___________ is an example for organ of disuse.

(a)

kiwi

(b)

chicken

(c)

duck

(d)

dove

75. We can cut the DNA with the help of

(a)

scissors

(b)

restriction endonucleases

(c)

knife

(d)

RNAase

76. In a hexaploid wheat( 2n = 6 x = 42 ) the haploid (n) and the basic(x) number of chromosomes are

(a)

n = 7 and x = 21

(b)

n = 21 and x = 21

(c)

n = 7 and x = 7

(d)

n = 21 and x = 7

77. Dr. Norman received the Nobel peace prize in_________

(a)

1960

(b)

1980

(c)

1956

(d)

1970

78. Blood dotting factors produced by biotechnology helps patients suffering from__________.

(a)

haemophilia

(b)

homeostasis

(c)

cerebral palsy

(d)

CHD

79. Tobacco consumption is known to stimulate secretion of adrenaline. The component causing this could be

(a)

Nicotine

(b)

Tannic acid

(c)

Curcumin

(d)

heptin

80. Where does alcohol effect immediately after drinking?

(a)

eyes

(b)

auditory region

(c)

liver

(d)

central nervous system

81. ______________ is a symptom of CHD.

(a)

Glycosuria

(b)

Ischemia

(c)

Hyperglycemia

(d)

Polyphagia

82. ____________ help reduce blood sugar levels.

(a)

Sweet potato

(b)

Tomato

(c)

Beetroot

(d)

Cane sugar

83. Soil erosion is more where there is

(a)

no rain fall

(b)

low rainfal

(c)

rain fall is high

(d)

none of these

84. Global warming will cause

(a)

raise in level of oceans

(b)

melting of glaciers

(c)

sinking of islands

(d)

all of these

85. Choose the non-renewable energy resource

(a)

Solar energy

(b)

Water

(c)

Minerals

(d)

Wind

86. The project for conservation of_______was launched in 1976

(a)

tiger

(b)

elephant

(c)

lion

(d)

crocodile

87. Which software is used to create animation?

(a)

Paint

(b)

PDF

(c)

MS Word

(d)

Scratch

88. Which is used to edit programs?

(a)

Inkscape

(b)

script editor

(c)

stage

(d)

sprite

89. In Scratch, the characters are known as_________

(a)

Sprite

(b)

Stage

(c)

Element

(d)

Script

90. Which button is presses to run the script?

(a)

Green flag

(b)

Red flag

(c)

Blue flag

(d)

Yellow flag