Deekshaa Study Centre

07/11/2025

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13/10/2025

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10/10/2025

Here are 10 chemistry MCQ questions for SSC and Rail exams:

*Chemistry Questions*
1. *What is the smallest unit of matter that still retains the properties of an element?*
a) Molecule
b) Atom
c) Compound
d) Mixture

*Answer:* b) Atom

2. *Which of the following elements is a noble gas?*
a) Carbon
b) Oxygen
c) Neon
d) Nitrogen

*Answer:* c) Neon

3. *What is the chemical symbol for gold?*
a) Ag
b) Au
c) Hg
d) Pb

*Answer:* b) Au

4. *Which type of bond involves the sharing of electrons between atoms?*
a) Ionic bond
b) Covalent bond
c) Hydrogen bond
d) Electrostatic bond

*Answer:* b) Covalent bond

5. *What is the pH of a neutral solution?*
a) 0
b) 7
c) 14
d) 10

*Answer:* b) 7

6. *Which of the following compounds is an acid?*
a) NaOH
b) HCl
c) NaCl
d) H2O

*Answer:* b) HCl

7. *What is the process by which a solid changes directly to a gas?*
a) Melting
b) Boiling
c) Sublimation
d) Deposition

*Answer:* c) Sublimation

8. *Which element is the most abundant in the Earth's crust?*
a) Oxygen
b) Silicon
c) Aluminum
d) Iron

*Answer:* a) Oxygen

9. *What is the chemical formula for water?*
a) H2O
b) CO2
c) O2
d) N2

*Answer:* a) H2O

10. *Which of the following types of reactions involves the combination of two or more substances to form a new compound?*
a) Synthesis reaction
b) Decomposition reaction
c) Replacement reaction
d) Combustion reaction

*Answer:* a) Synthesis reaction

10/10/2025

Here are 10 biology MCQ questions for SSC and Rail exams:

*Biology Questions*
1. *What is the process by which plants make their own food?*
a) Respiration
b) Photosynthesis
c) Decomposition
d) Fermentation

*Answer:* b) Photosynthesis

2. *Which part of the human brain controls balance and coordination?*
a) Cerebrum
b) Cerebellum
c) Brainstem
d) Spinal cord

*Answer:* b) Cerebellum

3. *What is the largest organ of the human body?*
a) Skin
b) Liver
c) Brain
d) Heart

*Answer:* a) Skin

4. *Which blood vessels carry oxygenated blood from the lungs to the heart?*
a) Pulmonary arteries
b) Pulmonary veins
c) Aorta
d) Coronary arteries

*Answer:* b) Pulmonary veins

5. *What is the process by which cells become specialized to perform specific functions?*
a) Mitosis
b) Meiosis
c) Differentiation
d) Mutation

*Answer:* c) Differentiation

6. *Which type of plant is known for its ability to capture and digest insects?*
a) Cactus
b) Venus flytrap
c) Succulent
d) Carnivorous plant

*Answer:* b) Venus flytrap

7. *What is the main function of the mitochondria in a cell?*
a) Protein synthesis
b) Cell signaling
c) Energy production
d) DNA replication

*Answer:* c) Energy production

8. *Which disease is caused by a deficiency of insulin in the human body?*
a) Hypertension
b) Diabetes mellitus
c) Coronary artery disease
d) Asthma

*Answer:* b) Diabetes mellitus

9. *What is the process by which water moves through a plant, from the roots to the leaves?*
a) Respiration
b) Photosynthesis
c) Transpiration
d) Osmosis

*Answer:* c) Transpiration

10. *Which part of a cell contains genetic information?*
a) Mitochondria
b) Nucleus
c) Ribosomes
d) Lysosomes

*Answer:* b) Nucleus

10/10/2025

Here are 10 physics MCQ questions for SSC and Rail exams:

*1. What is the SI unit of force?*
a) Joule
b) Newton
c) Pascal
d) Watt

*Answer:* b) Newton

*2. Which type of mirror is used by dentists to see large images of patient's teeth?*
a) Convex mirror
b) Concave mirror
c) Plane mirror
d) Spherical mirror

*Answer:* b) Concave mirror

*3. What is the speed of sound in air?*
a) 343 m/s
b) 300 m/s
c) 400 m/s
d) 500 m/s

*Answer:* a) 343 m/s

*4. Which law states that the ratio of the potential difference across a conductor to the current flowing through it is a constant?*
a) Ohm's Law
b) Newton's Law
c) Faraday's Law
d) Boyle's Law

*Answer:* a) Ohm's Law

*5. What is the unit of measurement for electric charge?*
a) Ampere
b) Coulomb
c) Volt
d) Ohm

*Answer:* b) Coulomb

*6. Which phenomenon is responsible for the twinkling of stars?*
a) Reflection
b) Refraction
c) Diffraction
d) Interference

*Answer:* b) Refraction

*7. What is the SI unit of pressure?*
a) Pascal
b) Newton
c) Joule
d) Watt

*Answer:* a) Pascal

*8. Which type of wave is sound wave?*
a) Electromagnetic wave
b) Mechanical wave
c) Transverse wave
d) Longitudinal wave

*Answer:* d) Longitudinal wave

*9. Who discovered the law of universal gravitation?*
a) Isaac Newton
b) Galileo Galilei
c) Albert Einstein
d) Johannes Kepler

*Answer:* a) Isaac Newton

*10. What is the unit of measurement for power?*
a) Joule
b) Watt
c) Newton
d) Pascal

*Answer:* b) Watt ¹ ²

05/10/2025

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Looking for all-in-one study materials for your competitive exam preparation? In this course, we provide a complete package of notes, MCQs, PDFs & resources for SSC, Railway, Bank, WBCS, WBPSC & other government exams. 👉 What’s included: 📘 Subject-wise Notes (GK, Current Affairs, Quant, Reas...

11/06/2025