Sets
Chemistry Set 4
30 questions 1. Steam is visible because it contains:
2. The mole is the SI unit of:
3. Consider the following:
(I) Larger exposed area of water
(II) Higher humidity of air
(III) Greater movement of air
Which of the above make water evaporate faster?
4. A reaction in which a single substance breaks down to give two or more simpler substances is called a:
5. Who among the following is known as the 'Father of Modern Indian Chemistry'?
6. Addition of hydrogen to ethene to form ethane is an example of:
7. The idea of Parmanu (atom), as tiny indivisible eternal particles of matter, was first spoken of by:
8. Heating copper powder in air coats its surface with black:
9. The two atoms in an oxygen molecule are held together by a:
10. The process of dissolving an acid or a base in water is:
11. In terms of electron transfer, oxidation is:
12. A universal indicator is:
13. Dobereiner's groups of three elements with similar properties are known as:
14. The salt formed when ethanoic acid reacts with sodium hydroxide is:
15. Consider the following pairs:
(I) Stainless steel – Iron, nickel, chromium and carbon
(II) Brass – Copper and zinc
(III) Bronze – Copper and zinc
Which of the pairs given above is/are correctly matched?
16. A series of compounds in which the same functional group substitutes for hydrogen in a carbon chain is called a:
17. Which of the following sets forms a Dobereiner triad?
18. Ionic compounds are formed by the transfer of electrons from:
19. Which of the following compounds reacts with sodium hydrogencarbonate to produce effervescence?
20. Which of the following observations does not by itself indicate that a chemical reaction has taken place?