Previous Years Questions (2)
Properties of Materials, Metals, and Non-metals
(Sub-topics: Objects around us – Properties of materials – classification of materials, Properties and uses of Metals and Non-metals, Reactivity order of metals)
1. A thread which is stronger than a steel wire
2. The property of a metal to make fine wires
3. Metal which is not sonorous
4. The property of materials by which they can be beaten into thin sheets is called
5. The metal stored in kerosene is
6. Choose the pair of magnetic material
Methods of Separation & Solutions
(Sub-topics: Methods of separation– Saturated and unsaturated solutions)
7. Grains and husk are separated by
8. “Chromatography” is the method used to separate
9. The property helped in separating the husk from grain
10. The method used to separate the components from the mixture of camphor and salt is
Acids, Bases, and Salts
(Sub-topics: Acids, bases and salts, indicators, Neutralization)
11. The chemical that can be used to neutralize acidic soils
12. When carbon dioxide is passed through lime water, it turns milky due to the formation of
13. The Acid used to remove ink stains on clothes is
14. Chemical name of Lime water is
15. The gas produced when metals react with sodium hydroxide
16. The acid present in grapes
17. The base present in glass cleaners is
18. The substance that changes Red litmus to blue
Physical and Chemical Changes
(Sub-topics: Physical and chemical changes, Rusting of Iron, Galvanization, Crystallization)
19. Rusting is a
20. The process of depositing a layer of zinc on iron
21. The change from milk to curd is a
22. Solid carbon dioxide is also known as