1061 + Mcqs in Science Page 14 McqOptions

651.	Which of these is living?
A.	Dog
B.	Plants
C.	Both
D.	None of these
Answer» D. None of these

Discussion

652.	Molars are used for:
A.	Cutting and biting food.
B.	Tearing food.
C.	Cracking food.
D.	Grinding food.
E.	None of these
Answer» E. None of these

Discussion

653.	Liver and pancreas pour their juices into:
A.	Small intestine
B.	Large intestine
C.	Food pipe
D.	Mouth
E.	None of these
Answer» B. Large intestine

Discussion

654.	This is not a way of keeping teeth clean.
A.	Rinsing
B.	Flossing
C.	Brushing
D.	Bathing
E.	None of these
Answer» E. None of these

Discussion

655.	Carnivorous animals have long, sharp ____ teeth.
A.	Incisors
B.	Premolars
C.	Canine
D.	Molars
E.	None of these
Answer» D. Molars

Discussion

656.	____ is also known as food pipe.
A.	Stomach
B.	Small intestine
C.	Large intestine
D.	Oesophagus
E.	None of these
Answer» E. None of these

Discussion

657.	There are ____ permanent teeth in our mouth.
A.	25
B.	32
C.	34
D.	30
E.	None of these
Answer» C. 34

Discussion

658.	Which one of the following statements is not correct about the microbes?
A.	Some microbes are harmful for us.
B.	Microbes can be seen by naked eyes.
C.	Microbes can be found everywhere.
D.	Microbes can grow inside or outside our body.
E.	None of these
Answer» E. None of these

Discussion

659.	Which one of the following is not a type of teeth?
A.	Canine
B.	Molar
C.	Incisor
D.	Plaque
E.	None of these
Answer» E. None of these

Discussion

660.	The microorganism which is used for making bread.
A.	Protozoa
B.	Fungi
C.	Bacteria
D.	Virus
E.	None of these
Answer» C. Bacteria

Discussion

661.	This microbe helps in changing milk into curd.
A.	Virus
B.	Bacteria
C.	Fungi
D.	Protozoa
E.	None of these
Answer» C. Fungi

Discussion

662.	Which of the following diseases is not caused by protozoa?
A.	Malaria
B.	Food poisoning
C.	Dysentery
D.	All the above
E.	None of these
Answer» F.

Discussion

663.	Match the following: [A] Fungi (I) Malaria [B] Bacteria (II) Polio [C] Protozoa (III) Ringworm [D] Virus (IV) Tuberculosis
A.	(A - III), (B - II), (C - IV), (D - I)
B.	(A - III), (B- IV), (C - I), (D - II)
C.	(A - IV), (B - III), (C - II), (D - I)
D.	(A - II), (B - I), (C - IV), (D - III)
E.	None of these
Answer» C. (A - IV), (B - III), (C - II), (D - I)

Discussion

664.	Typhoid is caused by:
A.	Virus
B.	Bacteria
C.	Fungi
D.	Protozoa
E.	None of these
Answer» C. Fungi

Discussion

665.	Number of milk teeth in humans is:
A.	22
B.	20
C.	24
D.	32
E.	None of these
Answer» C. 24

Discussion

666.	____ are disease causing microbes.
A.	Antibiotic
B.	Malaria
C.	Dysentery
D.	Germs
E.	None of these
Answer» E. None of these

Discussion

667.	The outermost layer of teeth is:
A.	Dentine
B.	Enamel
C.	Pulp
D.	Root
E.	None of these
Answer» C. Pulp

Discussion

668.	The vitamin which plays an important role in maintaining healthy teeth and gums is:
A.	Vitamin C
B.	Vitamin K
C.	Vitamin B
D.	Vitamin E
E.	None of these
Answer» B. Vitamin K

Discussion

669.	Which is the most important mineral for healthy teeth?
A.	Iron
B.	Potassium
C.	Sodium
D.	Calcium
E.	None of these
Answer» E. None of these

Discussion

670.	A sticky coating formed by bacteria on teeth is:
A.	Decay
B.	Enamel
C.	Plaque
D.	Saliva
E.	None of these
Answer» D. Saliva

Discussion

671.	Which one among the following is not a part of a tooth?
A.	Enamel
B.	Root
C.	Decay
D.	Neck
E.	None of these
Answer» D. Neck

Discussion

672.	These teeth are meant for cracking food.
A.	Incisors
B.	Premolars
C.	Canines
D.	Both [a] and [c]
E.	None of these
Answer» C. Canines

Discussion

673.	In humans there are ____ molars in each jaw.
A.	Six
B.	Two
C.	Four
D.	Three
E.	None of these
Answer» B. Two

Discussion

674.	Match the following: [A] Incisors (I) cracking teeth [B] Canines (II) cutting teeth [C] Premolars (III) grinding teeth [D] Molars (IV) tearing teeth
A.	(A - III), (B - I), (C - IV), (D - II)
B.	(A - IV), (B - III), (C - II), (D - I)
C.	(A - II), (B - I), (C - IV), (D - III)
D.	(A - II), (B - IV), (C - I), (D - III)
E.	None of these
Answer» E. None of these

Discussion

675.	Which of the following is not correct about the teeth?
A.	They give proper shape to our face.
B.	They help us to chew food.
C.	They help us to speak clearly.
D.	They make digestion easy.
E.	None of these
Answer» F.

Discussion

676.	The force that pulls the objects downward towards the centre of the earth is called ____.
A.	Friction
B.	Gravity
C.	Elasticity
D.	Mechanical force
E.	None of these
Answer» C. Elasticity

Discussion

677.	Sumeet threw a pebble directly upwards. Which one of the following statements is correct regarding this?
A.	Gravity will have no effect on the pebble until it reaches its highest point.
B.	The pebble will keep going upwards at the same speed until it reaches its highest point.
C.	The pebble will keep going upwards until gravity ceases to act on it.
D.	Gravity will act on the pebble both while it is going up and also while it is falling down.
Answer» E.

Discussion

678.	Frictional force is applied in which of the following cases?
A.	A car moving on the road.
B.	Writing on a paper with pen.
C.	Walking on the road.
D.	All the above
E.	None of these
Answer» E. None of these

Discussion

679.	When a hand blender is switched on, ___________ energy changes to _______ and _______ energy.
A.	Mechanical, Sound, Heat
B.	Sound, Heat, Mechanical
C.	Electrical, Heat, Potential
D.	Electrical, Kinetic, Sound
Answer» E.

Discussion

680.	A ball rolling on a surface comes to rest on its own due to:
A.	Muscular force
B.	Frictional force
C.	Elastic force
D.	Gravitational force
E.	None of these
Answer» C. Elastic force

Discussion

681.	Pulley is not used for:
A.	Drawing water from wells.
B.	Raising a flag to the top of a flag pole.
C.	Lilting heavy loads by cranes.
D.	Steering wheel of a car.
E.	None of these
Answer» E. None of these

Discussion

682.	In which of the following electrical energy is used to heat substances?
A.	Microwave oven
B.	Radio
C.	Television
D.	Fan
Answer» B. Radio

Discussion

683.	What is the energy change that takes place when television is switched on?
A.	Electrical energy is converted to heat and light energy.
B.	Electrical energy is converted to chemical energy.
C.	Electrical energy is converted to light and sound energy.
D.	Electrical energy is converted into mechanical energy.
Answer» D. Electrical energy is converted into mechanical energy.

Discussion

684.	What is the energy change that takes place when an electric bulb is switched on?
A.	Electrical energy is converted in to heat and light energy.
B.	Electrical energy is converted into chemical energy.
C.	Electrical energy is converted into sound energy.
D.	Electrical energy is converted into mechanical energy.
Answer» B. Electrical energy is converted into chemical energy.

Discussion

685.	Which one of the following is a kind of force?
A.	Gravitational force
B.	Frictional force
C.	Muscular force
D.	All the above
E.	None of these
Answer» E. None of these

Discussion

686.	Which one of the following celestial objects is a source of solar energy?
A.	Moon
B.	Sun
C.	Earth
D.	Wind
E.	None of these
Answer» C. Earth

Discussion

687.	The devices given below uses:
A.	Kinetic energy
B.	Electrical energy
C.	Potential energy
D.	Geothermal energy
E.	None of these
Answer» C. Potential energy

Discussion

688.	Study the energy transformation shown here. In which of the following cases is this taking place?
A.	Glowing of an electric torch.
B.	Photosynthesis in plants.
C.	Generation of electricity in windmills.
D.	Burning of wood
Answer» E.

Discussion

689.	Which type of energy is present in flowing water?
A.	Electrical energy
B.	Gravitational energy
C.	Kinetic energy
D.	Solar energy
E.	None of these
Answer» D. Solar energy

Discussion

690.	Work is said to be done when ______ produces displacement of a body.
A.	force
B.	energy
C.	distance
D.	speed
Answer» C. distance

Discussion

691.	Work done\[\text{=}\,\,\text{Force}\,\,\text{ }\!\!\times\!\!\text{ }\!\!\_\!\!\text{ }\!\!\_\!\!\text{ }\!\!\_\!\!\text{ }\!\!\_\!\!\text{ }\!\!\_\!\!\text{ }\!\!\_\!\!\text{ }\]
A.	Speed
B.	Time
C.	Distance
D.	Energy
E.	None of these
Answer» D. Energy

Discussion

692.	Which of these comes from the sun?
A.	Solar energy
B.	Thermal energy
C.	Atomic energy
D.	Geo-thermal energy
Answer» B. Thermal energy

Discussion

693.	The force which pulls a body towards the earth is called
A.	friction.
B.	gravity.
C.	tension.
D.	collision.
Answer» C. tension.

Discussion

694.	A ball thrown in the sky falls back on the earth due to:
A.	Frictional force
B.	Electrostatic force
C.	Gravitational force
D.	All the above
E.	None of these
Answer» D. All the above

Discussion

695.	To reduce force X on a carrom board, talcum powder is applied. The force X is the force _______.
A.	Applied by hand on sponge ball
B.	That makes it tough to lift heavy objects
C.	That pulls down all objects towards earth
D.	That prevents us from slipping while walking
Answer» E.

Discussion

696.	To do work, we need
A.	force.
B.	energy.
C.	hands.
D.	muscles.
Answer» C. hands.

Discussion

697.	In which of the following cases do you have to do more work?
A.	Pushing a heavy table
B.	Kicking a ball
C.	Stopping a rolling ball
D.	Pushing a cart
Answer» B. Kicking a ball

Discussion

698.	A stone thrown upwards comes down because of
A.	mechanical energy.
B.	kinetic energy of the stone.
C.	wind energy.
D.	gravitational force of the earth.
Answer» E.

Discussion

699.	The force by which a moving body stops on its own is:
A.	Electrostatic force
B.	Mechanical force
C.	Friction al force
D.	Gravitational force
E.	None of these
Answer» D. Gravitational force

Discussion

700.	A wheel and a rope is used in making:
A.	Hammer
B.	Pulley
C.	Wedge
D.	Inclined plane
E.	None of these
Answer» C. Wedge

Discussion

Explore topic-wise MCQs in 4th Class.

Which of these is living?

Molars are used for:

Liver and pancreas pour their juices into:

This is not a way of keeping teeth clean.

Carnivorous animals have long, sharp ____ teeth.

____ is also known as food pipe.

There are ____ permanent teeth in our mouth.

Which one of the following statements is not correct about the microbes?

Which one of the following is not a type of teeth?

The microorganism which is used for making bread.

This microbe helps in changing milk into curd.

Which of the following diseases is not caused by protozoa?

Match the following: [A] Fungi (I) Malaria [B] Bacteria (II) Polio [C] Protozoa (III) Ringworm [D] Virus (IV) Tuberculosis

Typhoid is caused by:

Number of milk teeth in humans is:

____ are disease causing microbes.

The outermost layer of teeth is:

The vitamin which plays an important role in maintaining healthy teeth and gums is:

Which is the most important mineral for healthy teeth?

A sticky coating formed by bacteria on teeth is:

Which one among the following is not a part of a tooth?

These teeth are meant for cracking food.

In humans there are ____ molars in each jaw.

Match the following: [A] Incisors (I) cracking teeth [B] Canines (II) cutting teeth [C] Premolars (III) grinding teeth [D] Molars (IV) tearing teeth

Which of the following is not correct about the teeth?

The force that pulls the objects downward towards the centre of the earth is called ____.

Sumeet threw a pebble directly upwards. Which one of the following statements is correct regarding this?

Frictional force is applied in which of the following cases?

When a hand blender is switched on, ___________ energy changes to _______ and _______ energy.

A ball rolling on a surface comes to rest on its own due to:

Pulley is not used for:

In which of the following electrical energy is used to heat substances?

What is the energy change that takes place when television is switched on?

What is the energy change that takes place when an electric bulb is switched on?

Which one of the following is a kind of force?

Which one of the following celestial objects is a source of solar energy?

The devices given below uses:

Study the energy transformation shown here. In which of the following cases is this taking place?

Which type of energy is present in flowing water?

Work is said to be done when ______ produces displacement of a body.

Work done\[\text{=}\,\,\text{Force}\,\,\text{ }\!\!\times\!\!\text{ }\!\!\_\!\!\text{ }\!\!\_\!\!\text{ }\!\!\_\!\!\text{ }\!\!\_\!\!\text{ }\!\!\_\!\!\text{ }\!\!\_\!\!\text{ }\]

Which of these comes from the sun?

The force which pulls a body towards the earth is called

A ball thrown in the sky falls back on the earth due to:

To reduce force X on a carrom board, talcum powder is applied. The force X is the force _______.

To do work, we need

In which of the following cases do you have to do more work?

A stone thrown upwards comes down because of

The force by which a moving body stops on its own is:

A wheel and a rope is used in making:

When a hand blender is switched on, _______ energy changes to _ and _____ energy.