NEET EXAM SHORT ANSWER QUESTIONS CHEMISTRY CBSE

 

A. Physical Chemistry

1. Avogadro number is equal to ________.

Ans: $6.022 \times 10^{23}$

 2. Molarity is defined as ________.

Ans: Moles of solute per litre of solution

3. Which law gives the relationship between pressure and volume of a gas?

Ans: Boyle’s Law

4. pH of pure water at 25 °C is ________.

Ans: 7

 5. Rate of reaction depends on ________.

Ans: Concentration, temperature, catalyst, and nature of reactants

 6. The SI unit of entropy is ________.

Ans: J K⁻¹ mol⁻¹

7. Enthalpy change for neutralization of strong acid and strong base is ________.

Ans: –57.1 kJ mol⁻¹

8. The gas which shows maximum deviation from ideal behaviour is ________.

Ans: NH₃

9. The value of van’t Hoff factor (i) for NaCl in water is approximately ________.

Ans: 2

10.The colligative property depends on ________. 

Ans: Number of solute particles (not their nature)

B. Inorganic Chemistry

1. The number of elements in the periodic table is ________.

Ans: 118

2. The element with atomic number 19 is ?

Ans: Potassium (K)

3. Which group element is known as alkali metals?

Ans: Group 1

4. The most electronegative element is ________.

Ans: Fluorine

5. Which gas is liberated when zinc reacts with HCl?

Ans: Hydrogen gas (H₂)

6. The colour of CuSO₄·5H₂O crystals is ________.

Ans: Blue

7. The chemical formula of bleaching powder is ________.

Ans: CaOCl₂

8. Which halogen is a liquid at room temperature?

Ans: Bromine

9. Which noble gas has the least boiling point?

Ans: Helium

10. Which element forms the maximum number of compounds in the periodic table?

Ans: Carbon

C. Organic Chemistry

1.The simplest hydrocarbon is ________.

Ans: Methane (CH₄)

2. Functional group of alcohol is ________.

Ans: –OH (hydroxyl group)

3. The IUPAC name of CH₃–CH₂–OH is ________.

Ans: Ethanol

4. Isomerism in which compounds have same molecular formula but different structural arrangement is called ________.

Ans: Structural isomerism

5. The reagent used for the test of unsaturation in hydrocarbons is ________.

Ans: Bromine water

6. The hybridization of carbon in ethyne (C₂H₂) is ________.

Ans: sp

7. Aldehydes contain which functional group?

Ans: –CHO

8. The product formed on complete oxidation of ethanol is ________.

Ans: Acetic acid (ethanoic acid)

9. The most electronegative atom in organic molecules is usually ________.

Ans: Oxygen

10. Benzene shows ________ type of reactions predominantly.

Ans: Electrophilic substitution