Mock Test

Exam: RRB Group D Subject: General Science Topic: Chemistry

Total Questions: 20

Q1. The hydration of ethene to ethanol involves the addition of which of the following species?

H+ and OH- 2H+ 2OH- H2
Q2. Which of the following is a chemical property of water?

It is a liquid at room temperature It boils at 100°C It reacts with sodium It is colorless
Q3. The splitting of spectral lines in the presence of an electric field is known as:

Zeeman Effect Stark Effect Paschen-Back Effect Fine Structure
Q4. Nanotechnology is often described as the manipulation of matter on which scale?

Millimeter Centimeter Atomic and molecular scale Kilometer
Q5. When electric current is passed through water, it decomposes into hydrogen and oxygen. This is an example of:

Photodecomposition Thermal decomposition Electrolytic decomposition Displacement reaction
Q6. In an electrochemical cell, the anode is where:

Reduction occurs Oxidation occurs Electrons are consumed Current flows from negative to positive
Q7. The Beer-Lambert law relates the attenuation of light to the properties of the medium through which the light propagates. In photochemistry, this law is crucial for determining:

The quantum yield of the reaction. The number of photons absorbed by the sample. The rate of the primary photochemical process. The excited state lifetime.
Q8. The process by which amino acids are joined together to form proteins is called:

Hydrolysis Polymerization Peptide bond formation Transcription
Q9. Which of the following is a unit operation used for size enlargement?

Crushing Grinding Pelletizing Filtration
Q10. The absorption of which region of the electromagnetic spectrum leads to electronic transitions in molecules?

Infrared Microwave Ultraviolet and Visible X-ray
Q11. The volume of liquids is relatively constant because:

The intermolecular forces are very weak. The molecules are far apart. The intermolecular forces are strong enough to hold the molecules close together. The molecules are arranged in a fixed lattice.
Q12. Which of the following is a common feedstock for the production of plastics?

Water Oxygen Ethylene Sulfur
Q13. Which of the following colloidal systems represents a 'foam'?

Milk Hair cream Shaving cream Pani puri water
Q14. Which of the following is a characteristic of acidic solutions?

They turn red litmus blue They have a pH greater than 7 They can conduct electricity They feel slippery
Q15. Which state of matter is often called the 'fourth state of matter'?

Solid Liquid Gas Plasma
Q16. Which element has the symbol 'Fe'?

Fluorine Iron Gold Silver
Q17. The deviation of a gas from ideal behavior is greatest at:

High temperature and low pressure Low temperature and high pressure High temperature and high pressure Low temperature and low pressure
Q18. The average kinetic energy of gas molecules is directly proportional to:

Pressure Volume Absolute temperature Molar mass
Q19. Respiration is considered a:

Endothermic reaction Exothermic reaction Neutralization reaction Decomposition reaction
Q20. Which of the following particles has the greatest penetrating power?

Alpha particle Beta particle Gamma ray Neutron

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