Question

A. Choose the correct answer
1. The process of photosynthesis converts solar energy into: *
a. Kinetic energy
b. Chemical energy
c. Potential energy
d. Nuclear energy
2. Which of the following is digested by saliva? *
a. Glucose
b. Starch
c. Cellulose
d. Sucrose
3. The length of the small intestine in adult human beings is about: *
a. 1.5 m
b. 2.5 m
c. 7.5 m
d. 4.5 m
4. Which of the following has a tropical climate? *
a. Kashmir
b. Kerala
c. Rajasthan
d. Assam
5. Yeast converts glucose into: *
a. Starch
b. Alcohol
c. Lactic acid
d. Yogurt
6. In liquids, heat transfer takes place by *
a. Radiation
b. Conduction
c. Convection
d. None of these
7. Some stainless steel frying pans are provided with copper bottoms. The reason for this could be that: *
a. Copper bottom makes the pan more durable
b. Such pan appears colourful
c. Copper is a better conductor of heat than stainless steel
d. None of these
8. The wind speed is measured by *
a. Wind vane
b. Barometer
c. Anemometer
d. Hygrometer
9. An athlete attains a maximum speed of 36 km/h. This speed is equal to: *
a. 5 m/s
b. 10 m/s
c. 15 m/s
d. 20 m/s
10. Water cycle does not involve which of the following? *
a. Evaporation
b. Condensation
c. Formation of clouds
d. Rainwater harvesting
11. Products of a neutralization reaction are always *
a. an acid and a base
b. an acid and a salt
c. a salt and water
d. a salt and a base
12. Which of the following sets of substances contains acids? *
a. Grapes, lime water
b.Vinegar, soap
c. Curd, milk of magnesia
d. Curd, vinegar
13. Which of the following is not a type of silk? *
a. Mulberry silk
b. Tassar silk
c. Mooga silk
d. Moth silk
14. Silkworms secrete fibre made of *
a. fat
b. cellulose
c. protein
d. nylon
15. Water which falls from the clouds as rain or snow is called: *
a. condensation
b. precipitation
c. infiltration
d. transpiration​

Answer 1

Answer:

1. B

2. a

3. B

4. B

5. a

6. d

7. c

8. c

9. b

10. b

11. b

12. b

13. d

14. c

15. d