important questions of chemistry class 10
Don't give silly answers
tomorrow is my exam and I don't want any silly answers
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Answered by
6
You will definitely get silly answers since you had asked an imbecile question!!
By the way I will give you some important questions:
I'm giving you only those important questions that have come in boards and are tough okay!!:
1. Why is hydrogen peroxide kept in coloured bottles?
2. Why do fire flies glow at night?
3. Grapes hanging on the plant do not ferment but after being plucked from the plant can be fermented. Give reasons. Is this a chemical change?
4. A milkman adds a very small amount of baking soda to fresh milk. Why does this milk take longer time to set free?
5. Why is carbon not used for reducing aluminium from aluminium oxide?
6. Explain why we cannot have isomers of first three members of alkane series.
7. List three tests to distinguish between saturated and unsaturated compounds.
8. Define Periodicity.
9. State the main aim of classifying elements.
10. Define:
A. Covalent radii
B. Metallic radii.
Hope it helps.
By the way I will give you some important questions:
I'm giving you only those important questions that have come in boards and are tough okay!!:
1. Why is hydrogen peroxide kept in coloured bottles?
2. Why do fire flies glow at night?
3. Grapes hanging on the plant do not ferment but after being plucked from the plant can be fermented. Give reasons. Is this a chemical change?
4. A milkman adds a very small amount of baking soda to fresh milk. Why does this milk take longer time to set free?
5. Why is carbon not used for reducing aluminium from aluminium oxide?
6. Explain why we cannot have isomers of first three members of alkane series.
7. List three tests to distinguish between saturated and unsaturated compounds.
8. Define Periodicity.
9. State the main aim of classifying elements.
10. Define:
A. Covalent radii
B. Metallic radii.
Hope it helps.
Answered by
1
Combination, decomposition ,displacement ,double displacement
Oxidation reduction rancidity photographic film(silver chloride and silver bromide) plaster of Paris (formula and it's use) ,Mendeleev's and modern periodic table , soap and detergents and why carbon is tetravalent
Oxidation reduction rancidity photographic film(silver chloride and silver bromide) plaster of Paris (formula and it's use) ,Mendeleev's and modern periodic table , soap and detergents and why carbon is tetravalent
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