Mock Test

Exam: RRB Group D Subject: General Science

Total Questions: 20

Q1. When analyzing a sample with a high concentration of salts, which type of chromatography would be most suitable to minimize interference from ion exclusion?

Reversed-phase HPLC Normal-phase HPLC Ion-pair chromatography Size-exclusion chromatography
Q2. Which of the following phenomena is a direct consequence of surface tension?

Evaporation Boiling Formation of spherical droplets Diffusion
Q3. Which of the following is NOT a characteristic of a black hole?

Mass Spin (Angular Momentum) Electric Charge Color
Q4. A DNA molecule with a higher G-C content will have a higher melting temperature (Tm) compared to a DNA molecule with a lower G-C content. Why?

G-C pairs have two hydrogen bonds, while A-T pairs have three. G-C pairs have three hydrogen bonds, while A-T pairs have two. G-C pairs are larger than A-T pairs, increasing stacking interactions. G-C pairs are more resistant to enzymatic cleavage.
Q5. What does 'in-situ conservation' mean?

Conserving species in laboratories Conserving species in their natural habitats Conserving species in zoos Conserving species through artificial breeding
Q6. The absorption of digested fats primarily occurs in the:

Stomach Duodenum Jejunum and ileum Large intestine
Q7. Statins are a class of drugs primarily used to:

Lower blood pressure Reduce cholesterol levels Prevent blood clots Treat bacterial infections
Q8. Which of the following colors of light deviates the most when passing through a prism?

Red Orange Violet Yellow
Q9. Which biome is found in the deepest parts of the ocean, characterized by extreme pressure, perpetual darkness, and chemosynthetic organisms as primary producers?

Pelagic Zone Intertidal Zone Abyssal Zone Coral Reef
Q10. What is the purpose of a 'blank' in analytical measurements?

To measure the analyte concentration To account for background signals or contamination To dilute the sample To catalyze the reaction
Q11. Which of the following elements is a transition metal?

Zinc Calcium Potassium Argon
Q12. Which of the following is NOT a characteristic feature of a coniferous forest (Taiga)?

Evergreen trees Long, cold winters High annual precipitation Acidic soil
Q13. To induce a larger EMF in a coil, one should:

Decrease the speed of relative motion. Use a weaker magnet. Increase the number of turns in the coil. Move the coil away from the magnet.
Q14. Forensic toxicologists analyze biological fluids for drugs and their metabolites. When dealing with drugs that are highly polar and not amenable to GC analysis, which chromatographic technique is typically preferred?

Gas Chromatography (GC) Thin-Layer Chromatography (TLC) High-Performance Liquid Chromatography (HPLC) Supercritical Fluid Chromatography (SFC)
Q15. Which cellular compartment is responsible for the synthesis of fatty acids and cholesterol?

Rough endoplasmic reticulum Smooth endoplasmic reticulum Golgi apparatus Peroxisome
Q16. In modern biological classification, the five-kingdom system has largely been replaced by:

Two-kingdom system Three-domain system Four-kingdom system Six-kingdom system
Q17. The gravitational force is always:

Repulsive Attractive Both attractive and repulsive Neither attractive nor repulsive
Q18. What is the developmental stage where the embryo is implanted in the uterine wall?

Zygote Gastrula Blastocyst Fetus
Q19. Which of the following is a safety precaution when heating chemicals?

Heating without supervision Using an open flame for all substances Never heating volatile chemicals in an open container Heating directly with a Bunsen burner
Q20. A body is moving with constant velocity. What is the net force acting on the body?

Equal to its momentum Zero Equal to its mass Equal to its acceleration

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