Sets
Chemistry Set 19
30 questions 1. In the chlor-alkali process, hydrogen gas is liberated at the:
2. Consider the following pairs:
(I) Water molecule – two hydrogen atoms and one oxygen atom
(II) Carbon dioxide molecule – two carbon atoms and one oxygen atom
Which of the pairs given above is/are correctly matched?
3. Which of the following is a heterogeneous mixture?
4. In Ayurveda, Siddha and other traditional systems of medicine, the solvent primarily used for medicinal formulations is:
5. Which of the following is a mixture?
6. The chemical name of baking soda is:
7. The Iron Pillar of Delhi was made in the time of:
8. Consider the following pairs:
(I) Nitrogen – Manufacture of fertilisers
(II) Iodine – Antiseptic for wounds
(III) Oxygen – Water purification
Which of the pairs given above is/are correctly matched?
9. The best conductors of heat among metals are:
10. Coating iron or steel with a thin layer of zinc to prevent rusting is called:
11. The gas evolved when ethanoic acid reacts with sodium carbonate, which turns lime water milky, is:
12. In ice, compared with liquid water, the interparticle distance is:
13. Weight, the force by which the Earth attracts an object, is measured in:
14. Pure ethanol is called:
15. Acids that give rise to more H⁺ ions are called:
16. When two atoms of hydrogen combine, the stable particle formed is called a:
17. Which of the following can be used as an olfactory indicator?
18. In a solution formed by mixing two liquids, the component present in smaller amount is called the:
19. Consider the following uses:
(I) Washing soda is used in glass, soap and paper industries.
(II) Washing soda is used in the manufacture of borax.
(III) Washing soda is used to make drinking water free from germs.
Which of the above is/are correct?
20. The formula of magnesium hydroxide is: