Mock Test

Exam: BPSC Subject: General Science Topic: Chemistry

Total Questions: 20

Q1. The process where a heavy nucleus splits into lighter nuclei is called:

Fusion Fission Radioactive decay Transmutation
Q2. Which of the following is a key step in the Contact process for sulfuric acid production?

Oxidation of SO2 to SO3 Reaction of SO3 with water Reaction of SO2 with steam Reduction of SO2 to S
Q3. Consider the dissociation of N2O4 into NO2: N2O4(g) <=> 2NO2(g). If the volume of the container is doubled, the equilibrium will:

Shift towards reactants Shift towards products Not be affected Reach a new equilibrium constant
Q4. In which of the following molecules would you expect to find a dative covalent bond?

O2 CH4 NH4+ H2O
Q5. The trend of decreasing electronegativity down a group is generally consistent. However, which of the following exceptions or nuances poses a significant challenge to simple explanations?

Electronegativity of halogens. Electronegativity of alkali metals. The electronegativity of the third-row p-block elements compared to their second-row counterparts, influenced by poorer shielding of d-orbitals. The nearly identical electronegativities of some elements in the third and fourth periods due to the lanthanide contraction.
Q6. Consider the following species: SO2, SO3, SO3^2-. Which statement correctly compares their bond angles?

Angle(SO2) > Angle(SO3) > Angle(SO3^2-) Angle(SO3) > Angle(SO2) > Angle(SO3^2-) Angle(SO3^2-) > Angle(SO2) > Angle(SO3) Angle(SO2) > Angle(SO3^2-) > Angle(SO3)
Q7. In the production of phenol from cumene (Cumene process), the oxidation of cumene to cumene hydroperoxide is followed by acid-catalyzed cleavage. What is the primary role of the acid catalyst in the cleavage step?

To protonate the hydroperoxide, initiating the rearrangement To decompose the hydroperoxide into byproducts To facilitate the absorption of oxygen To regenerate the cumene
Q8. The process of burning waste is called:

Recycling Composting Incineration Landfilling
Q9. Hydrogen bonds are an example of:

Ionic bonds Covalent bonds Intermolecular forces Metallic bonds
Q10. The process of calcination involves heating a solid to a high temperature in the absence of air to cause:

Oxidation Reduction Decomposition Melting
Q11. Which gas is responsible for the greenhouse effect?

O2 N2 CO2 H2
Q12. What is the process of creating new DNA molecules from a template DNA molecule called?

Transcription Translation Replication Mutation
Q13. Collision theory states that for a reaction to occur, reactant molecules must:

Have sufficient energy and correct orientation Move randomly Dissolve in a solvent Be in gaseous state
Q14. Capillary action in liquids is a result of the interplay between:

Cohesion and adhesion Surface tension and gravity Evaporation and condensation Viscosity and pressure
Q15. The dichromate ion (Cr₂O₇²⁻) reacts with iodide ions (I⁻) in acidic solution to produce iodine (I₂) and chromium(III) ions (Cr³⁺). In this reaction, what is the oxidation state of chromium in Cr₂O₇²⁻?

+3 +4 +6 +7
Q16. The spontaneous emission of radiation from an unstable nucleus is known as:

Nuclear fission Nuclear fusion Radioactivity Nuclear bombardment
Q17. The compound HClO3 is correctly named as:

Hydrochloric acid Chlorous acid Chloric acid Perchloric acid
Q18. Which of the following is a weak acid?

HCl HNO3 H2SO4 CH3COOH
Q19. Which of the following is an intensive property?

Mass Volume Temperature Number of moles
Q20. The transition from solid to gas without passing through the liquid phase is called:

Fusion Vaporization Condensation Sublimation

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