Question

Q.1. Choose the correct answer. (any ten) 10

1. _____________ is hardest known non metal.

a) graphite b) diamond c) iron d) none of these

2. Mgso4 + Zn _______________

a) acidic oxide b) basic oxide c) no reaction d) none of these

3. Metal react with water to form ___________ gas.

a) oxygen b) hydrogen c) nitrogen d) none of these

4. ____________ is not natural resource.

a) rain b) soil c) medicine d) none of these

5. ____________ is exhaustible resource.

a) forest b) soil c) air d) none of these

6. ______________ is renewable source of energy.

a) solar energy b) coal c) petroleum d) none of these

7. ____________ zone of candle has highest temperature.

a) inner b) middle c) outer d) none of these

8. _____________ gas can lead to death of person.

a) carbon dioxide b) carbon monoxide c) nitrogen d) none of these

9. The genes are present in ___________________

a) nucleolus b) nucleoplasm c) chromosomes d) none of these

10. In the centre of plant cell, we find large ______________

a) nucleus b) cell wall c) vacuole d) none of these

11. Myopia is also called ___________________

a) farsightedness b) nearsightedness c) cataract d) none of these

12. Amount of light in to eye is controlled by _____________

a) eye lens b) cornea c) iris d) ciliary muscles​

Answer 1

Answer:

1)b) diamond

2)c) no reaction

3)b) hydrogen

4)c) medicine

5)a) forest

6)a) solar energy

7)c) outer

8)b) carbon monoxide

9)c) chromosomes

10)c) vacuole

11)b) nearsightedness

12) c) iris