Mock Test

Exam: RRB Group D Subject: General Science

Total Questions: 20

Q1. In a transistor operating in the active region, the base-emitter junction is:

Reverse biased Forward biased Zero biased Either forward or reverse biased
Q2. What is a genetically engineered organism (GEO)?

An organism that has undergone natural selection An organism whose genetic material has been altered using genetic engineering techniques An organism that reproduces asexually An organism that has been cloned
Q3. The gain of electrons by an atom or ion is called:

Oxidation Reduction Ionization Dissociation
Q4. Speciation is the process of:

The death of species The creation of new species The adaptation of species The migration of species
Q5. What is the primary goal of chemical research and development?

To discover new elements To create new chemicals and processes To sell existing chemicals To analyze existing compounds
Q6. Which type of pollination occurs when pollen is transferred from the anther of one flower to the stigma of another flower on the same plant?

Cross-pollination Geitonogamy Autogamy Xenogamy
Q7. What are the building blocks of DNA?

Amino acids Proteins Nucleotides Lipids
Q8. The process of optimizing chemical reactions for industrial production is known as:

Chemical degradation Process development Chemical decay Theoretical chemistry
Q9. What is the binary equivalent of the octal number 5?

100 101 110 111
Q10. If a fungal pathogen significantly reduces the population of earthworms (detritivores) in a forest soil, which of the following would be the MOST likely consequence for the nutrient availability for the trees (producers)?

Nutrient availability would increase due to reduced consumption by earthworms. Nutrient availability would decrease due to slower decomposition and nutrient release. Nutrient availability would remain unchanged as fungi also decompose organic matter. Nutrient availability would increase due to increased competition for nutrients.
Q11. Which of the following is NOT a characteristic property of acids?

Taste bitter Turn blue litmus red React with active metals to produce hydrogen gas React with bases to form salt and water
Q12. Which of the following is a defining feature of the phylum Mollusca?

Exoskeleton of chitin Water vascular system Mantle and radula Segmented body
Q13. What is the primary role of neurotransmitters?

To provide structural support to the neuron To generate the action potential To transmit signals across the synapse To insulate the axon
Q14. The most stable subatomic particle, in terms of its charge, is the:

Proton Electron Neutron All are equally stable
Q15. The mechanical breakdown of food into smaller pieces is called:

Digestion Absorption Mastication Fermentation
Q16. Which of the following is an example of a combination reaction?

2H₂O₂ → 2H₂O + O₂ Zn + CuSO₄ → ZnSO₄ + Cu CaO + H₂O → Ca(OH)₂ HCl + NaOH → NaCl + H₂O
Q17. Which computational method is based on the approximation that the total energy of a system is a unique functional of its ground-state electron density?

Hartree-Fock Configuration Interaction Density Functional Theory Valence Bond Theory
Q18. A spring of spring constant k = 100 N/m is stretched by 0.1 m. The work done is:

0.5 J 1 J 10 J 5 J
Q19. The reflex arc, a fundamental unit of nervous system function, typically involves a sensory neuron, an interneuron (in polysynaptic reflexes), and a motor neuron. Which component is responsible for processing the sensory information and deciding on an appropriate motor response?

Sensory receptor Motor neuron Integration center (spinal cord or brainstem) Effector organ
Q20. The 'self-interaction error' is a known deficiency of which class of DFT functionals?

Local Density Approximation (LDA) functionals and Generalized Gradient Approximation (GGA) functionals. Hybrid functionals. Meta-GGA functionals. Range-separated hybrid functionals.

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