9th Standard Science 1 Mark Important Questions (Bookback and Creative)

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Questions:

Multiple Choice Question

79 x 1 = 79

Flagella arranged along the sides of the bacteria _____________.

(a)

Peritrichous

(b)

Monotrichous

(c)

Lophotrichous

(d)

Amphitrichous

Apiculture is the rearing of ____________.

(a)

Silk worm

(b)

Bacteria

(c)

Apex culture

(d)

Honey bees

Which cycle involves transpiration?

(a)

Water cycle

(b)

Nitrogen cycle

(c)

Carbon cycle

(d)

All the above

Paracetamol is an _____________.

(a)

Analgesic

(b)

Antipyretics

(c)

Antiseptic

(d)

Antimalarial

What is the minimum number of carbon atoms of an alkane must have to form an isomer?

(a)

(b)

(c)

(d)

Which of the following units is used to measure distance between the stars?

(a)

(b)

(c)

light year

(d)

A Sonar device on a submarine sends out a signal and receives an echo 5 seconds later. Calculate the speed of sound in water if the distance of the object from the submarine is 3500 m.

(a)

1440 ms^-1

(b)

1460 ms^-1

(c)

1400 ms^-1

(d)

1550 ms^-1

When a solid is partly or wholly immersed in a fluid, it experiences an apparent loss in ____________.

(a)

weight

(b)

buoyant force

(c)

liquid displaced

(d)

None

The symbiotic association of fungi and vascular plants is

(a)

Lichen

(b)

Rhizobium

(c)

Mycorhizae

(d)

Azotobacter

10.

Binomial name of Nilavembu is

(a)

Leucas aspera

(b)

Andrographis paniculata

(c)

Crotolaria juncea

(d)

Cassia fistula

11.

LINUX is a

(a)

Paid Software

(b)

Licensed Software

(c)

Free and Proprietary software

(d)

Free and Open source software

12.

Which of the following is correct?

(a)

Free and Open source

(b)

Free and Traditional software

(c)

Passive and Open source

(d)

Passive and Traditional source

13.

Severity of disease symptom depends upon

(a)

number of microbes

(b)

target organ

(c)

both a and b

(d)

none of these.

14.

One of the means of indirect transmission of a disease is

(a)

sneezing

(b)

coughing

(c)

vectors

(d)

droplet infection

15.

Identify the incorrect statement with respect to adaptations of earthworm.

(a)

Earthworm has a streamlined body with no antennae or fins.

(b)

Each segment of earthworm has setae.

(c)

Many earthworms become inactive in a process called hibernation, during winter season.

(d)

Earthworms remain in its burrow during day time, to avoid sunlight.

16.

Increased amount of ___________ in the atmosphere, results in greenhouse effect and global warming

(a)

carbon monoxide

(b)

sulphur dioxide

(c)

nitrogen dioxide

(d)

carbon dioxide

17.

The Big Bang occurred ________ years ago.

(a)

13.7 billion

(b)

15 million

(c)

15 billion

(d)

20 million

18.

Who proposed the heliocentric model of the universe?

(a)

Tycho Brahe

(b)

Nicolaus Copernicus

(c)

Ptolemy

(d)

Archimedes

19.

Which of the following does not contain natural dyes?

(a)

Potato

(b)

Beetroot

(c)

Carrot

(d)

Turmeric

20.

One Nanometre is

(a)

10^-7 metre

(b)

10^-8 metre

(c)

10^-6 metre

(d)

10^-9 metre

21.

If the speed of a wave is 340 m s^-1 and its frequency is 1700 Hz, then wavelength λ for this wave in cm will be

(a)

(b)

(c)

(d)

0.2

22.

A musical instrument is producing continuous note. This note cannot be heard by a person having a normal hearing range. This note must then be passing through

(a)

wax

(b)

vacuum

(c)

water

(d)

empty vessel

23.

Graphene is one atom thick layer of carbon obtained from

(a)

Diamond

(b)

Fullerene

(c)

Graphite

(d)

Gas Carbon

24.

Raagav brings his lunch every day to school in a plastic container which has resin code number 5. The container is made of

(a)

Polystyrene

(b)

PVC

(c)

Polypropylene

(d)

LDPE

25.

In a pressure cooker, the food is cooked faster because

(a)

increased pressure lowers the boiling point

(b)

increased pressure raises the boiling point

(c)

decreased pressure raises the boiling point

(d)

increased pressure lowers the melting point

26.

The size of an air bubble rising up in water

(a)

decreases

(b)

increases

(c)

remains same

(d)

may increase or decrease

27.

Which of the following are weak bases?

(a)

NH₄OH & NaOH

(b)

Ca(OH)₂& KOH

(c)

NH₄OH & Ca(OH)₂

(d)

NaOH & KOH

28.

Two resistances R₁ and R₂ are connected in parallel. Their equivalent resistance is__________

(a)

R₁₊R₂

(b)

\(\cfrac { { R }_{ 1 }{ R }_{ 2 } }{ { R }_{ 1 }+{ R }_{ 2 } } \)

(c)

\(\cfrac { { R }_{ 1 }+{ R }_{ 2 } }{ { R }_{ 1 }{ R }_{ 2 } } \)

(d)

\(\sqrt { { R }_{ 1 }+{ R }_{ 2 } } \)

29.

The act of bringing swallowed food back to the mouth is called___________

(a)

egestion

(b)

ingestion

(c)

micturition

(d)

regurgitation

30.

Statement (A) Ionic compounds do not conduct electricity in solid state.
Reason (B) The ions in ionic compounds are tightly held together by strong electrostatic force of attraction and they cannot move freely

(a)

B explains A

(b)

B does not explain A

(c)

B is wrong A

(d)

A is right B is wrong

31.

The maximum number of electrons that can be accommodated in s, p, d, and f subshells are__________

(a)

14, 10, 6, 2

(b)

6, 10, 2, 14

(c)

2, 6, 10, 14

(d)

6, 2, 14, 10

32.

The magnetic field produced due to a circular wire at its centre is_________

(a)

at 45° to the plane of the wire

(b)

at 60° to the plane of the wire

(c)

in the plane of the wire

(d)

perpendicular to the plane of the wire

33.

A bit has a single binary value either __________ or __________

(a)

1,-1

(b)

0,1

(c)

1,2

(d)

2,0

34.

_________is seen in unicellular animals.

(a)

Mitosis

(b)

meiosis

(c)

Amitosis

(d)

none of the above

35.

Electroplating is an example for

(a)

heating effect

(b)

chemical effect

(c)

flowing effect

(d)

magnetic effect

36.

In current electricity, a positive charge refers to,

(a)

presence of electron

(b)

presence of proton

(c)

absence of electron

(d)

absence of proton

37.

Tendon connects

(a)

cartilage with muscles

(b)

bone with muscles

(c)

ligament with muscles

(d)

bone with bone

38.

Nerve cell does not contains

(a)

axon

(b)

nerve endings

(c)

tendons

(d)

dendrites

39.

Pen drive is _______ device.

(a)

Output

(b)

Input

(c)

Storage

(d)

connecting cable

40.

Which one of the following is an example for wireless connections?

(a)

Wi-Fi

(b)

Electric wires

(c)

VGA

(d)

USB

41.

Which one of the following substance is not a constituent of sweat?

(a)

Urea

(b)

Protein

(c)

Water

(d)

Salt

42.

Stomach of human beings mainly digests

(a)

carbohydrates

(b)

proteins

(c)

fat

(d)

sucrose

43.

The hydrated salt of copper sulphate has______colour

(a)

Red

(b)

White

(c)

Blue

(d)

Pink

44.

pH value of human blood is_________

(a)

7.0

(b)

7.4

(c)

7.6

(d)

7.6

45.

When we heat one end of an iron rod, its other end also get heated. Can you say, Which one of the following is behind this?

(a)

Convection of heat

(b)

Radiation of heat

(c)

Insulation of heat

(d)

Conduction of heat

46.

Elements with stable electronic configurations have eight electrons in their valence shell. They are__________

(a)

Halogens

(b)

Metals

(c)

Noble gases

(d)

non metals

47.

Oxidising agents are also called as____________because they remove electrons from other substances.

(a)

electron donors

(b)

electron acceptors

(c)

reducing agents

(d)

Ionic agents

48.

If the electronic configuration of an element is 1s² 2s²2p⁶ 3s²3p¹, then it will occupy___________ block of the periodic table.

(a)

(b)

(c)

(d)

49.

The increasing order of the energy of subshells is

(a)

s>p>d>f

(b)

(c)

(d)

50.

The part of the AC generator that passes the current from the armature coil to the external circuit is

(a)

field magnet

(b)

split rings

(c)

slip rings

(d)

brushes

51.

An electric generator converts

(a)

electrical energy into mechanical energy

(b)

mechanical energy into heat energy

(c)

electrical energy into electrical energy

(d)

mechanical energy into electrical energy

52.

Two cylinders of equal height and radius are made of copper and aluminium. Which of them conducts heat faster?

(a)

Copper rod

(b)

Aluminium rod

(c)

Both of them

(d)

None of them

53.

SI unit of temperature is

(a)

fahrenheit

(b)

joule

(c)

celsius

(d)

kelvin

54.

Find the incorrect pair.

(a)

Earthworm - Metamerism

(b)

Roundworm - Pseudocoelom

(c)

Hydra Polyp - Medusa

(d)

Starfish - Asymmetrical

55.

Lipases are enzymes which breaks down __________.

(a)

Proteins

(b)

Fats

(c)

Carbohydrates

(d)

Food

56.

Atoms of the same element having same atomic number but different Mass number are called _________

(a)

Isotopes

(b)

Isobars

(c)

Isotones

(d)

Isotherm

57.

Mixture of two immiscible liquids are separated by using a______

(a)

funnel

(b)

test tube

(c)

beaker

(d)

separating funnel

58.

Mirrors having spherical surface of reflection are __________________

(a)

plane mirror

(b)

lenses

(c)

spherical mirrors

(d)

prism

59.

Shoots are said to_____________.

(a)

Negative phototropism

(b)

Positive phototropism

(c)

Positive hydrotropism

(d)

Negative chemotropism

60.

Area under a velocity time graph gives ______

(a)

time taken by an object

(b)

distance travelled by an object

(c)

acceleration

(d)

retardation

61.

Unit of acceleration is________.

(a)

ms^-2

(b)

ms^-1

(c)

\(\frac{m}{s}\)

(d)

\(\frac{s}{m}\)

62.

Data processing involves________ steps

(a)

seven

(b)

four

(c)

six

(d)

eight

63.

____________ is an electronic device which stores data and information

(a)

Telescope

(b)

Television

(c)

Computer

(d)

Radio

64.

Force involved in uniform circular motion is given by _____________.

(a)

f = mv²/r

(b)

f = mvr

(c)

f = mr²/v

(d)

f = v²/r

65.

Poikilothermic organisms are

(a)

Fish, Frog, lizard, man

(b)

Fish, Frog, lizard, cow

(c)

Fish, Frog, lizard, snake

(d)

Fish, Frog, lizard, crow

66.

The sprouting of onion and potatoes can be delayed by the process of _______________

(a)

irradiation

(b)

freezing

(c)

Salting

(d)

Canning

67.

The physician who discovered that scurvy can be cured by ingestion of citrus fruits is ______________

(a)

James Lind

(b)

Louis Pasteur

(c)

Charles Darwin

(d)

Isaac Newton

68.

Chlorophyll in a leaf is required for __________.

(a)

photosynthesis

(b)

transpiration

(c)

tropic movement

(d)

nastic movement

69.

The non-directional movement of a plant part in response to temperature is called ________.

(a)

thermotropism

(b)

Thermonasty

(c)

chemotropism

(d)

thigmonasty

70.

Mesoglea is present in

(a)

Porifera

(b)

Coelenterata

(c)

Annelida

(d)

Arthropoda

71.

The speed of light is maximum in

(a)

vacuum

(b)

glass

(c)

diamond

(d)

graphite

72.

The term nucleons refer to

(a)

Protons and electrons

(b)

only Neutrons

(c)

electrons and neutrons

(d)

Protons and neutrons

73.

Change in the number of neutrons in an atom changes it to

(a)

an ion

(b)

an isotope

(c)

an isobar

(d)

another element

74.

A ray of light passes from one medium to another medium. Refraction takes place when angle of incidence is

(a)

0^o

(b)

45^o

(c)

90^o

(d)

120^o

75.

For a simple distillation process we need to have

(a)

an evaporating dish

(b)

a separating funnel

(c)

a filter with filter paper

(d)

a Liebig condenser

76.

Filtration method is effective in separating _______ mixture

(a)

Solid-solid

(b)

solid-liquid

(c)

liquid-liquid

(d)

liquid-gas

77.

The area under velocity – time graph represents the

(a)

velocity of the moving object

(b)

displacement covered by the moving object

(c)

speed of the moving object

(d)

acceleration of the moving object

78.

Which among the following is not a device to measure mass?

(a)

Spring balance

(b)

Beam balance

(c)

Physical balance

(d)

Digital balance

79.

Choose the correct one

(a)

mm < cm < m < km

(b)

mm > cm > m > km

(c)

km < m < cm < mm

(d)

mm > m > cm > km

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Answers Key:

Multiple Choice Question

79 x 1 = 79

(a)
Peritrichous

(d)
Honey bees

(a)
Water cycle

(b)
Antipyretics

(a)
4

(a)
weight

10.

(b)
Andrographis paniculata

11.

(d)
Free and Open source software

12.

(a)
Free and Open source

13.

14.

15.

16.

(d)
carbon dioxide

17.

(a)
13.7 billion

18.

(b)
Nicolaus Copernicus

19.

(a)
Potato

20.

(d)
10^-9 metre

21.

(b)
20

22.

(b)
vacuum

23.

24.

25.

(b)
increased pressure raises the boiling point

26.

(b)
increases

27.

28.

(b)
\(\cfrac { { R }_{ 1 }{ R }_{ 2 } }{ { R }_{ 1 }+{ R }_{ 2 } } \)

29.

(d)
regurgitation

30.

(a)
B explains A

31.

32.

(d)
perpendicular to the plane of the wire

33.

(b)
0,1

34.

35.

(b)
chemical effect

36.

(b)
presence of proton

37.

(b)
bone with muscles

38.

39.

40.

(a)
Wi-Fi

41.

(b)
Protein

42.

(b)
proteins

43.

44.

(b)
7.4

45.

(d)
Conduction of heat

46.

47.

(b)
electron acceptors

48.

(b)
p

49.

(b)
s

50.

(d)
brushes

51.

(d)
mechanical energy into electrical energy

52.

(a)
Copper rod

53.

(d)
kelvin

54.

(d)
Starfish - Asymmetrical

55.

(b)
Fats

56.

(a)
Isotopes

57.

(d)
separating funnel

58.

59.

(b)
Positive phototropism

60.

(b)
distance travelled by an object

61.

(a)
ms^-2

62.

63.

64.

(a)
f = mv²/r

65.

66.

(a)
irradiation

67.

(a)
James Lind

68.

(a)
photosynthesis

69.

(b)
Thermonasty

70.

(a)
Porifera

71.

(a)
vacuum

72.

(d)
Protons and neutrons

73.

(b)
an isotope

74.

(b)
45^o

75.

(a)
an evaporating dish

76.

(b)
solid-liquid

77.

(b)
displacement covered by the moving object

78.

(a)
Spring balance

79.

(a)
mm < cm < m < km

9th Standard Science 1 Mark Important Questions (Bookback and Creative)

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