General Science Class 10

The value of Kc increases when :

1. [Product] is less
2. [Product] is more
3. [Reactant] is more
4. [Reactant = product]

Corrosive effect on skin is caused by :

1. Acid
2. Base
3. Salt
4. Both a & b

Preservatives are used to preserve :

1. Acids
2. Bases
3. Food
4. Water

Which of the following is not an Arrhenius acid?

1. HCl
2. CO2
3. HNO3
4. H2SO4

NH3 can be a base according to :

1. Arrhenius theory
2. Bronsted-Lowery theory
3. Lewis theory
4. Both b and c

Which of the following is a Lewis base?

1. HNO3
2. CN
3. HCl
4. AlCl3

A substance that can donate a pair of electron to form coordinate covalent bond?

1. Lewis acid
2. Lewis base
3. Bronsted—Lowery acid
4. Bronsted-Lowery base

Salt among following is :

1. HCl
2. KCl
3. HNO3
4. H2SO4

Substances that react with both acids and bases are called?

1. Conjugate acids
2. Conjugate bases
3. Amphoteric substances
4. Buffers

The general formula for alkanes is :

1. CnH2n
2. CnH2n+1
3. CnH2n+2
4. CnH2n-1