P-2 Environmental management — Science STD 10 — Question

The following questions are about the nuclear reactor of a power plant.
Why is liquid sodium (or carbon dioxide gas) pumped through the reactor?

State an important use of decomposition reactions.

What are gametes?

Pranav and Pritee are twins in your class. They belong to ______________ twins type.

The ……. block contains the group 1 and 2.

State one use of bleaching powder (other than bleaching).

Write the names of at least three inorganic molecules which helped in the origin of life on the earth.

What is the name of tiny projections on the inner surface of small intestine which help in absorbing the digested food?

“The calorific value of cooking gas (LPG) is 50kj/ g”. What does it mean?

Name the famous book written by Charles Robert Darwin.