Sets
Chemistry Set 7
30 questions 1. Consider the following statements:
(I) Graphite is a conductor of electricity.
(II) Iodine is a non-metal that is lustrous.
(III) All metals exist as solids at room temperature.
Which of the above is/are correct?
2. Consider the following statements:
(I) Vegetable oils generally have long unsaturated carbon chains.
(II) Animal fats generally have saturated carbon chains.
(III) Saturated hydrocarbons readily undergo addition reactions.
Which of the above is/are correct?
3. Reactions in which oxidation and reduction occur simultaneously are called:
4. The saturated hydrocarbon with five carbon atoms is:
5. The property by which materials can be beaten into thin sheets is called:
6. Consider the following statements:
(I) More solute can be dissolved in an unsaturated solution at a given temperature.
(II) A saturated solution can dissolve more solute at the same temperature.
(III) For most solids, a saturated solution at a particular temperature behaves as an unsaturated solution if the temperature is increased.
Which of the above is/are correct?
7. With increase in temperature, the solubility of gases dissolved in liquids generally:
8. Pure water from any source contains hydrogen and oxygen in the mass ratio of:
9. Pure iron, which is very soft, becomes hard and strong when mixed with about ______ of carbon.
10. Which of the following solutions is more concentrated?
11. Assertion (A): Lime water turns milky when exhaled air is bubbled through it.
Reason (R): Exhaled air contains carbon dioxide, which reacts with lime water to form an insoluble substance.
12. Which of the following is not made of matter?
13. Which of the following is a covalent compound?
14. Lime water turns milky when carbon dioxide reacts with calcium hydroxide to form:
15. The colour of litmus solution when it is neither acidic nor basic is:
16. The physical state of matter is determined by which property of its particles?
17. In 1913, Henry Moseley observed regularities in the:
18. The process of conversion of water vapour into its liquid state is called:
19. The number of elements presently known is:
20. Bleaching powder is used to: