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To help aspirants in their preparation, we have curated a Daily MCQ Practice Set covering essential topics in physics, chemistry, biology, and current technological developments. This practice set is designed to:
✅ Improve conceptual clarity with well-structured multiple-choice questions.
✅ Enhance problem-solving speed with topic-wise practice.
✅ Keep candidates updated with recent advancements in science and technology.
Regular practice of these MCQs will strengthen your knowledge base and improve your accuracy in exams. Let’s get started with Science and Technology Daily MCQ Practice Set 4.
Table of Contents
General Science and technology MCQ questions for BPSC, UPSC, SSC Exams 2025.
Here are 30 General Science & Technology MCQs for BPSC, UPSC, and SSC exams 2025, categorized into different sections for better organization.
Section 1: Physics (10 Questions)
- The unit of electrical resistance is:
a) Ohm
b) Ampere
c) Volt
d) Watt - Which type of mirror is used in vehicle rear-view mirrors?
a) Plane mirror
b) Convex mirror
c) Concave mirror
d) Cylindrical mirror - The working principle of a hydrometer is based on:
a) Pascal’s law
b) Boyle’s law
c) Archimedes’ principle
d) Newton’s law - The time period of a simple pendulum depends on:
a) Mass of the bob
b) Length of the string
c) Amplitude of swing
d) Shape of the bob - Sound waves are:
a) Longitudinal waves
b) Transverse waves
c) Electromagnetic waves
d) None of the above - Which of the following is NOT a scalar quantity?
a) Speed
b) Work
c) Force
d) Temperature - The force that causes objects to float in water is called:
a) Frictional force
b) Magnetic force
c) Buoyant force
d) Gravitational force - The acceleration due to gravity on the Moon is approximately:
a) 1.6 m/s²
b) 9.8 m/s²
c) 3.7 m/s²
d) 5.5 m/s² - Which of the following converts electrical energy into mechanical energy?
a) Generator
b) Transformer
c) Motor
d) Battery - The rainbow formation is due to:
a) Reflection and dispersion
b) Refraction and dispersion
c) Diffraction and interference
d) Scattering and reflection
Section 2: Chemistry (10 Questions)
- The most abundant gas in Earth’s atmosphere is:
a) Oxygen
b) Carbon dioxide
c) Nitrogen
d) Hydrogen - The atomic number represents the number of:
a) Neutrons
b) Protons
c) Electrons
d) Both protons and electrons - Which element is used in making electric bulbs?
a) Copper
b) Tungsten
c) Aluminium
d) Iron - The chemical formula of baking soda is:
a) NaCl
b) Na₂CO₃
c) NaHCO₃
d) CaCO₃ - Rusting of iron is an example of:
a) Reduction
b) Oxidation
c) Neutralization
d) Sublimation - The pH of human blood is approximately:
a) 5.5
b) 7.4
c) 6.2
d) 8.5 - The main component of LPG (Liquefied Petroleum Gas) is:
a) Methane
b) Butane
c) Ethane
d) Propane - The hardest natural substance on Earth is:
a) Graphite
b) Diamond
c) Quartz
d) Iron - The chemical name of Vitamin C is:
a) Acetic acid
b) Ascorbic acid
c) Citric acid
d) Oxalic acid - Which of the following is an example of a noble gas?
a) Oxygen
b) Nitrogen
c) Helium
d) Carbon dioxide
Section 3: Biology (5 Questions)
- Which organ in the human body purifies blood?
a) Kidney
b) Liver
c) Heart
d) Lungs - What is the powerhouse of the cell?
a) Nucleus
b) Mitochondria
c) Ribosome
d) Endoplasmic reticulum - Plants absorb nitrogen in the form of:
a) Nitrogen gas
b) Ammonia
c) Nitrate
d) Nitric acid - Which part of the human brain controls balance and coordination?
a) Cerebrum
b) Cerebellum
c) Medulla
d) Hypothalamus - Which vitamin is mainly responsible for blood clotting?
a) Vitamin A
b) Vitamin B12
c) Vitamin C
d) Vitamin K
Section 4: Technology & Space Science (5 Questions)
- Who is known as the “Father of the Computer”?
a) Alan Turing
b) Charles Babbage
c) John von Neumann
d) Bill Gates - What does RAM stand for?
a) Random Automated Memory
b) Read Access Memory
c) Random Access Memory
d) Rapid Action Memory - Chandrayaan-3 was launched in which year?
a) 2020
b) 2021
c) 2023
d) 2025 - The first artificial satellite launched into space was:
a) Apollo 11
b) Sputnik 1
c) Voyager 1
d) Aryabhata - The James Webb Space Telescope is mainly designed to observe:
a) X-rays
b) Infrared radiation
c) Gamma rays
d) Ultraviolet radiation
Here are the correct answers to the 30 General Science & Technology MCQs:
Section 1: Physics
- a) Ohm (Unit of electrical resistance)
- b) Convex mirror (Used in vehicle rear-view mirrors)
- c) Archimedes’ principle (Hydrometer works on buoyancy)
- b) Length of the string (Time period of a simple pendulum depends on length)
- a) Longitudinal waves (Sound waves require a medium to travel)
- c) Force (It has both magnitude and direction, making it a vector quantity)
- c) Buoyant force (Force exerted by a fluid on an object)
- a) 1.6 m/s² (Gravity on the Moon is 1/6th of Earth’s)
- c) Motor (Converts electrical energy to mechanical energy)
- b) Refraction and dispersion (Rainbow formation)
Section 2: Chemistry
- c) Nitrogen (Makes up ~78% of Earth’s atmosphere)
- b) Protons (Atomic number is equal to the number of protons)
- b) Tungsten (Used in electric bulbs due to high melting point)
- c) NaHCO₃ (Sodium bicarbonate is baking soda)
- b) Oxidation (Rusting of iron is an oxidation reaction)
- b) 7.4 (Blood pH is slightly alkaline)
- b) Butane (LPG mainly contains butane and propane)
- b) Diamond (Hardest natural substance)
- b) Ascorbic acid (Chemical name of Vitamin C)
- c) Helium (Noble gas, chemically inert)
Section 3: Biology
- a) Kidney (Filters and purifies blood)
- b) Mitochondria (Powerhouse of the cell, produces ATP)
- c) Nitrate (Plants absorb nitrogen mostly as nitrates)
- b) Cerebellum (Controls balance and coordination)
- d) Vitamin K (Essential for blood clotting)
Section 4: Technology & Space Science
- b) Charles Babbage (Known as the Father of the Computer)
- c) Random Access Memory (RAM stores temporary data for quick access)
- c) 2023 (Chandrayaan-3 was launched on July 14, 2023)
- b) Sputnik 1 (Launched by the USSR in 1957, first artificial satellite)
- b) Infrared radiation (James Webb Space Telescope primarily observes in infrared)