Sets
Chemistry Set 11
30 questions 1. Consider the following statements about Dalton's atomic theory:
(I) Matter consists of indivisible atoms.
(II) All atoms of a given element have identical properties, including identical mass.
(III) Atoms are created in a chemical reaction.
Which of the above is/are correct?
2. The process of conversion of a liquid into a solid is called:
3. Consider the following statements:
(I) Some metals lose their lustre due to the effect of air and moisture.
(II) All materials that shine are metals.
(III) Surfaces of some non-metals can be made shiny by polishing or coating.
Which of the above is/are correct?
4. The mass per cent of carbon in carbon dioxide (C = 12.011 u, O = 16.00 u) is:
5. Methanol affects the ______ causing blindness.
6. The SI unit of mass is:
7. Which of the following metals is placed immediately above hydrogen in the reactivity series?
8. The principle of purification by crystallization is based on differences in the:
9. Consider the following pairs:
(I) Aerated water – Gas and liquid
(II) Vinegar – Liquid and liquid
(III) Alloys – Solid and gas
Which of the pairs given above is/are correctly matched?
10. Blue-coloured flowers of hydrangea are produced in:
11. The decomposition of vegetable matter into compost is an example of an:
12. In the reaction CuO + H₂ → Cu + H₂O, the substance reduced is:
13. Consider the following statements:
(I) Red rose extract gives red colour in acidic solutions.
(II) Red rose extract gives green colour in basic solutions.
(III) Turmeric paper turns red in acidic solutions.
Which of the above is/are correct?
14. The layer of the Earth with the lowest density is the:
15. The mass of the simplest whole number ratio of ions in an ionic compound is called its:
16. Consider the following pairs:
(I) Zirconium – Atomic energy
(II) Titanium – Aerospace
(III) Zirconium – Aerospace
Which of the pairs given above is/are correctly matched?
17. On heating cinnabar, the mass percentage of mercury obtained is around:
18. Carbon compounds having only single bonds between carbon atoms are called:
19. Heating ethanol at 443 K with excess concentrated sulphuric acid gives:
20. The decomposition of limestone gives carbon dioxide and: