Mock Test

Exam: RRB Group D Subject: General Science

Total Questions: 20

Q1. If the observer is moving away from a stationary sound source, the observed frequency will:

Increase Decrease Remain the same Be unpredictable
Q2. The order of increasing ionization energy for the following elements is:

Li < Na < K K < Na < Li Na < Li < K K < Li < Na
Q3. Which gas is most abundant in the Earth's atmosphere?

Oxygen Carbon Dioxide Nitrogen Hydrogen
Q4. Allergic reactions are primarily mediated by the release of which chemical compound from mast cells?

Cytokines Interleukins Histamine Complement proteins
Q5. The process where oxygen moves from the alveoli into the blood is called:

Diffusion Osmosis Active transport Filtration
Q6. Vascular cambium is a meristematic tissue responsible for the production of:

Primary xylem and primary phloem Secondary xylem and secondary phloem Epidermis and cortex Root hairs and stomata
Q7. Which of the following scenarios would be the most direct demonstration of disruptive selection acting on a population?

The average beak size in a finch population increases over generations due to a shift in available seed types. Individuals with intermediate wing lengths have higher survival rates than those with very short or very long wings. Both extremely short and extremely long antennae in a beetle population are favored, while intermediate lengths are selected against. The frequency of a specific fur color allele increases in a population due to camouflage advantages against a uniform background.
Q8. Which of the following is a major challenge in the scale-up of chemical processes?

Maintaining consistent temperature control Managing heat transfer efficiently Ensuring adequate mixing All of the above
Q9. The Third Law of Thermodynamics implies that entropy of a perfect crystal at absolute zero is:

Maximum Minimum Zero Undefined
Q10. Which hormone promotes the release of bicarbonate from the pancreas to neutralize stomach acid?

Gastrin Cholecystokinin (CCK) Secretin Insulin
Q11. If you push a wall and it doesn't move, the work done by you is:

Positive Negative Zero Infinite
Q12. Gravitational redshift is the phenomenon where light loses energy as it:

Enters a gravitational field Leaves a gravitational field Travels through a vacuum Is reflected off a massive object
Q13. The sarcoplasm is the cytoplasm of a:

Neuron Red blood cell Muscle fiber Nerve cell
Q14. The 'all-or-none' principle applies to which aspect of neuron function?

Dendritic branching Synaptic transmission Action potential generation Neurotransmitter synthesis
Q15. The gravitational potential energy of a particle of mass 'm' at a distance 'r' from the center of the Earth of mass 'M' is given by:

GMm/r -GMm/r GMm/r^2 -GMm/r^2
Q16. Which of the following is a strong electrolyte?

Sugar Vinegar (acetic acid) Table salt (NaCl) Alcohol
Q17. In the context of quantum chemistry, the wave function (Ψ) for a particle in a box is proportional to:

The momentum of the particle The kinetic energy of the particle The probability density of finding the particle The potential energy of the particle
Q18. The process of respiration in living organisms involves:

Only oxidation Only reduction Redox reactions Neutralization
Q19. PMMA, also known as Plexiglas or Lucite, is a polymer of:

Vinyl acetate Styrene Methyl methacrylate Acrylonitrile
Q20. Which type of stem cell is found in early-stage embryos and can differentiate into any cell type in the body?

Adult stem cells Somatic stem cells Embryonic stem cells Induced pluripotent stem cells

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