Question

SUBJECT: SCIENCE


1. A solution reacts with marble chips to produces a gas which turns lime water milky.

The solution contains


A).Na2SO4 B). CaSO4 C). H2SO4 D).K2SO4


2. 10 mL of a solution of NaOH is found to be completely neutralised by 8mL of a given

solution of HCl. If we take 20 mL of the same solution of NaOH, the amount of HCl

solution (the same solution as before) required to neutralise it will be


A). 4 B). 8 C). 12 D).16


3. A solution reacts with zinc granules to give a gas which burns with a “pop” sound.

The solution contains :-


A). ()2 B). 23 C). D).


4. Bee sting contains


A). An acid liquid B). A salt solution

C). An alkaline liquid D).An alcohol


5. A solution turns red litmus blue. Its Ph is likely to be


A). 1 B). 4 C). 5 D).10


6. A solution turns blue litmus. Its pH is likely to be:


A). 7 B). 5 C). 8 D).14


7. Wasp stings can be treated with:


A). Baking soda B). Vinegar

C). Washing soda D).Milk of magnesia


8. Which of the following are energy foods?


A). Carbohydrates and fats

B). Proteins and mineral salts

C). Vitamins and minerals
D).Water and roughage


9. Respiration is


A). Anabolic process

B). Physical process

C). Catabolic process

D).Biophysical process


10.Energy gained during aerobic respiration is _______ times more than anaerobic

respiration.


A). 8

B). 12

C). 19

D).32


​

Answer 1

Answer:

b

d

a

a

c

a

d

a

d

a

are the ans odmf the respective questions.