1. What is sound? (1)
(1) Energy
(2) Heat
(3) Magnet
(4) Ray
2. The chief source of heat energy is (1)
(1) Sun light
(2) Biogas
(3) Electricity
(4) Natural gas
3. Bones of horses of Harappan civilization were found at (3)
(1) Lothal
(2) Harappa
(3) Surkotada
(4) Mohanjodero
4. Which of the following gases is used to prepare Ammonia gas? (3)
(1) Nitrogen and oxygen
(2) Nitrogen and oxide
(3) Nitrogen and hydrogen
(4) Nitrogen and carbon
5.What is Ag-mark? (3)
(1) Technique to increase agricultural productivity
(2) Green Revolution
(3) Test of purity in the production of vegetable oil etc.
(4) None of these
