Mock Test

Exam: BPSC Subject: General Science Topic: Chemistry

Total Questions: 20

Q1. The amount of heat required to raise the temperature of 1 gram of a substance by 1 degree Celsius is called:

Specific heat capacity Molar heat capacity Heat of fusion Heat of vaporization
Q2. The chemical formula for potassium permanganate is:

$\\text{KMnO}_4$ $\\text{K}_2\text{MnO}_4$ $\\text{KMnO}_3$ $\\text{K}_2\text{MnO}_3$
Q3. Which element is known for its inert nature?

Potassium Neon Calcium Iron
Q4. What is the process where a compound breaks down into two or more simpler substances called?

Synthesis Combustion Decomposition Neutralization
Q5. What is a spectroscope used to measure?

Pressure Temperature Wavelength distribution of light Volume
Q6. What is the physical meaning of the quantum number 'm_s' for an electron?

Its orbital angular momentum. Its magnetic quantum number. Its spin angular momentum projection along a specific axis. Its principal energy level.
Q7. According to collision theory, for a reaction to occur, molecules must:

collide with sufficient energy and proper orientation collide with any energy have high concentration be in gaseous state
Q8. The standard enthalpy of formation of O2(g) is 0 kJ/mol. Why?

Oxygen is a highly reactive element. O2(g) is the most stable form of oxygen under standard conditions. Oxygen is always a diatomic molecule. The formation of O2(g) from its elements is an exothermic process.
Q9. Surface tension in liquids is due to:

Gravitational pull on the surface molecules Cohesive forces between surface molecules Adhesive forces between surface molecules and the container Kinetic energy of the molecules
Q10. Litmus paper is an indicator. Red litmus paper turns blue in:

Acids Bases Neutral solutions Both acids and bases
Q11. What is the name of the organic compound with the formula CH3COOH?

Ethanol Ethane Acetic acid Methanol
Q12. Which of the following is a major building block of proteins?

Fatty acids Nucleotides Amino acids Monosaccharides
Q13. For the reaction N2(g) + 3H2(g) <=> 2NH3(g), increasing the pressure will favor the formation of:

Nitrogen Hydrogen Ammonia All equally
Q14. Which of the following indicators would be most suitable for the titration of a weak acid with a strong base?

Methyl orange Bromothymol blue Phenolphthalein Methyl red
Q15. The catalytic converter in automobiles is designed to reduce harmful emissions. Which of the following reactions is NOT catalyzed by a typical three-way catalytic converter?

Oxidation of carbon monoxide (CO) to carbon dioxide (CO₂). Reduction of nitrogen oxides (NOx) to nitrogen gas (N₂). Oxidation of unburned hydrocarbons to carbon dioxide (CO₂) and water (H₂O). Reduction of sulfur dioxide (SO₂) to elemental sulfur (S).
Q16. For a system described by the Hamiltonian H = H₀ + λV, where H₀ is exactly solvable and λV is a small perturbation, what is the first-order correction to the energy?

λ<ψ₀|V|ψ₀> λ<ψ₀|H₀|ψ₀> <ψ₀|V|ψ₀> λ<ψ₀|V|ψ₁>
Q17. Which of the following is NOT a property of acids?

React with carbonates to produce CO2 Turn phenolphthalein pink Taste sour Corrosive in nature
Q18. Which of the following is an example of an intramolecular force?

Hydrogen bonding between water molecules Van der Waals forces between helium atoms The covalent bond within a water molecule Dipole-dipole forces between HCl molecules
Q19. Which of the following is a common byproduct in the production of chlorine gas by the electrolysis of brine?

Hydrogen gas Oxygen gas Nitrogen gas Carbon dioxide
Q20. Viscosity is a measure of a liquid's:

Resistance to evaporation Ability to dissolve solids Resistance to flow Tendency to form bubbles

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