CBSE Class 7 Science All Chapters MCQs Set B

1. Electric current is passed through a copper wire AB as shown in the diagram. What effect will it have on a compass needle brought near it?

(a) Compass needle will show deflection
(b) Compass needle will not show deflection
(c) The compass needle will become red hot
(d) The compass needle will break

2. Which of the following is not the constituent of Loamy Soil?
(a) Sand
(b) Clay
(c) Pieces of plastic·
(d) Silt

3. The earthworm breathes through
(a) Gills 
(b) Lungs 
(c) Moist Skin
(d) Spiracles

4. Sita is standing 4m away from the plane mirror. Ifshemoves 2m towards the mirror, what will be the distance between Sita and her image in the mirror?
(a) 4m
(b) 3m
(c) 2m
(d) 8m

5. If the number of turns in the coil of an electromagnet is more, then the strength of the electromagnet will be :
(a) Greater   
(b) Lesser 
(c) Same 
(d) Double

6. Mature ovary forms :
(a) Seed 
(b} Flower 
(c) Fruit
(d) Both (a) and (c)

7. They help to increase the surface areaof root for absorption of water and minerals:
(a) Xylem
(b) Phloem
(c) Root hair
(d) Both (a) and (c)

8. Which of the following is not a forest product?
(a) Gum
(b) Plywood
(c) Sealing wax
(d) Kerosene

9. Who discovered magnetic effect of electric current?
(a) Joule·'
(b) Maxwell
(c) Oersted
(d) Newton

10. Identify the plant that vegetatively propagates through leaves.
(a) Bryophyllum
(b) Rose
(c) Potato
(d) Jasmine

1. If the number of turns in the coil of an electromagnet is more, then the strength of the electromagnet will be :
(a) Greater
(b) Lesser
(c) Same
(d) Double

2. Presence of which one of the following makes the soil fertile?
(a) Clay
(b) Silt
(c) Humus
(d) Sand

3. Who discovered magnetic effect of electric current?
(a) Oersted
(b) Maxwell
(c) Joule   
(d) Newton

4. Neha is standing 6m away from the plane mirror. If she moves 1m towards the mirror, what will be the distance between Neha's image and the mirror?
(a) 5 m .
(b) 10 m
(c) 2m   
(d) 7m

5. Mature ovary forms
(a) Seed   
(c) Fruit
(b) Flower 
(d) Both (a) and (c)

6. They help to increase the surface area of root for absorption of water and minerals :
(a) Xylem
(b) Phloem
(c) Root hair
(d) Both (a) and (c)

7. If a image cannot be obtained on the screen, it must be
(a) Real
(b) Virtual
(c) lmageless
(d) None of the above

8. Identify the plant that vegetatively propagates through leaves.
(a) Potato
(b) Bryophyllum
(c) Rose   
(d) Jasmine

9. The earthworm breathes through :
(a) Gills 
(c) Moist Skin
(b) Lungs 
(d) Spiracles

10. Which of the following is not a forest product?
(a) Gum
(b) Plywood
(c) Sealing wax
(d) Kerosene

Question. The most suitable material for making the core of an electromagnet is :
(a) Iron
(b) Brass
(c) Aluminum
(d) Steel

Question. Which soil has the highest water holding capacity?
(a) Sandy soil
(b) Clayey soil
(c) Loam
(d) Gravel

Question. Electric current is passed through a copper wire AB as shown in the diagram.
What effect will it have on a compass needle brought near it?

(a) Compass needle will show deflection
(b) Compass needle will not show deflection
(c) The compass needle will become red hot
(d) The compass needle will break

Question. Ram is standing Sm away from the plane mirror.If he moves 2m towards the mirror, what will be the distance between Ram's image and the mirror?
(a) 3m 
(b) 6m 
(c) 2m
(d) 7m

Question. Who discovered magnetic effect of electric current?
(a) Joule
(b) Maxwell
(c) Oersted
(d) Newton

Question. Identify the plant that vegetatively propagates· through leaves.
(a) Potato
(b) Rose
(c) Bryophyllum
(d} Jasmine

Question. Mature ovary forms
(a) Seed   
(b) Flower    
(c) Fruit
(d) Both (a) and (c)

Question. If a image cannot be obtained on the screen, it must be
(a) Real
(b) Virtual
(c) Imageless
(d) None of the above

Question. They help to increase the surface area of root for absorption of water and minerals :
(a) Xylem
(b) Root hair
(c) Phloem .
(d) .Both (a) and (b)

Question. Presence of which one of the following makes the soil fertile?
(a) Clay
(b) Silt
(c) Humus
(d) Sand

Ql. Which of the following are not associated with cyclones?
(a) Strong winds   
(b) Tidal waves   
(c) Heavy mins 
(d) Volcanic eruptions

Q2. Which of the following could not be a unit of speed?
(a) Km/b   
(b) m/s   
(c) slm
(d) mm/s

Q3. Which of the following does not affect the climate of a place?
(a) Longitude   
(b) Distance from mountain 
(c) Distance from sea
(d) Winds

Q4. Pea plants has a symbiotic association with a/an
(a) Fungus   
(b) Algae 
(c) Bacteria 
(d) Virus

QS. Which of the following is not an indicator?
(a) Blue litmus     
(b) Methyl orange
(c) Phenolphthalein
(d) Methylene blue

Q6. Temperature is measured in
(a) Calories   
(b) Celsius   
(c) joules
(d) Watt

Q7.Heat causes
(a) Change of state 
(b) Expansion   
(c) Change of temperature
(d) all of these

Q8. The gas 'Which tums lime -water milky is
(a) Oxygen   
(b) Nitrogen
(c) Carbon dioxide
(d) hydrogen

Q9.Which of these is a synthetic fiber?
(a) Alpaca 
(b) Rayon   
(c) Mohair
(d) Vicuna

Q10. Which of these is not necessary for photosynthesis?
(a) Carbon dioxide   
(b) Light   
(c) Chlorophyll
(d) Nitrogen

Question: Name the gas which is used by white blood cells to kill the invading bacteria.