Mock Test

Exam: RRB Group D Subject: General Science

Total Questions: 20

Q1. An organism that gets energy by eating producers is a:

Secondary consumer Primary consumer Tertiary consumer Decomposer
Q2. What property of molecules is often exploited in host-guest chemistry?

Their boiling point Their shape and size complementarity Their density Their viscosity
Q3. For a zero-order reaction, the plot of concentration of reactant vs. time is a:

Straight line with positive slope Straight line with negative slope Parabola Hyperbola
Q4. Which law describes the relationship between the amount of product formed and the amount of reactant used in a chemical reaction?

Law of Conservation of Energy Law of Reciprocal Proportions Law of Conservation of Mass Avogadro's Law
Q5. Which of the following phenomena is observed when light passes through a very small aperture?

Reflection Refraction Diffraction Polarization
Q6. Which of the following is a characteristic of a competitive inhibitor?

It binds to a site other than the active site. It increases Vmax. It increases Km but does not affect Vmax. It decreases Km.
Q7. A single motor neuron and all the muscle fibers it innervates is called a:

Sarcomere Myofibril Motor unit Neuromuscular junction
Q8. The concept of 'ecosystem resilience' refers to the capacity of an ecosystem to withstand disturbances and maintain its structure and function. Which of the following factors contributes most to ecosystem resilience?

High species richness and functional redundancy, where multiple species perform similar ecological roles. Low species diversity, which simplifies trophic interactions and reduces cascading effects. Reliance on a single keystone species that dominates trophic interactions. Low habitat heterogeneity, which minimizes competition among species.
Q9. Which optical arrangement is typically used in a Scanning Electron Microscope (SEM) to detect emitted secondary electrons for imaging?

Transmission electron detector. Energy-dispersive X-ray (EDX) detector. Everhart-Thornley detector. Confocal microscope objective.
Q10. Which blood component transports carbon dioxide from tissues to the lungs?

White blood cells Plasma Platelets Red blood cells
Q11. Which of the following is NOT a characteristic of fast glycolytic (Type IIb) muscle fibers?

High myoglobin content. Rapid ATP production via glycolysis. Large diameter. Resistance to fatigue.
Q12. The chemistry in the early Solar System, as evidenced by meteorites, points to the presence of several organic compounds. Which class of organic molecules, found in meteorites like the Murchison meteorite, are crucial building blocks for proteins?

Aldehydes Alkanes Amino acids Carboxylic acids
Q13. What is the primary limitation of the STO-3G basis set?

It is too computationally expensive. It overestimates electron correlation. It is a minimal basis set and lacks polarization functions. It cannot describe excited states.
Q14. Which of the following is an example of a diatomic molecule commonly studied in astrochemistry?

Water (H₂O) Ammonia (NH₃) Carbon monoxide (CO) Methane (CH₄)
Q15. The ability of an organism to change its sex during its lifetime is an adaptation for:

Predator avoidance Finding food Increasing reproductive success Improving thermoregulation
Q16. Which of the following is the strongest oxidizing agent?

F₂ Cl₂ Br₂ I₂
Q17. Which vitamin deficiency causes scurvy?

Vitamin A Vitamin C Vitamin D Vitamin E
Q18. Which kingdom includes organisms like amoeba and paramecium?

Monera Fungi Protista Animalia
Q19. The conductivity of a solution of an electrolyte decreases with dilution because:

The number of ions decreases The mobility of ions decreases The degree of dissociation decreases The number of ions per unit volume decreases
Q20. The Doppler effect is a consideration in which spectroscopic technique?

UV-Vis Spectroscopy IR Spectroscopy Mass Spectrometry (for ion velocity) NMR Spectroscopy

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