General Science Questions for RRB ALP, Download Free PDF

If you are preparing for the RRB ALP exam, you simply cannot ignore General Science. In CBT 1, Science carries a massive 20 marks, making it a true game-changer. It covers basic Physics, Chemistry, and Biology. The best part is that these questions are direct 10th-level concepts, making them highly scoring. You do not need to read heavy books to get these free marks. To make things simple, we have provided exam-level questions with detailed solutions below. Solving these, along with attempting our free topic tests, will definitely help you prepare for this subject much more easily and quickly.

What to Study in General Science for RRB ALP?

You do not need to read thick engineering or medical books to pass this section. The Railway Board only wants to check your basic knowledge about the daily science around us. You can divide the whole syllabus into three simple parts:

• Physics: This is about how things work. Focus on basic units of measurement (like Force is measured in Newtons), motion, light, sound, and basic electricity concepts.
• Chemistry: This is about daily life chemicals. Just learn the common names and formulas of things we use daily (like baking soda, common salt), pH values, and basic facts about metals and non-metals.
• Biology: This is about the human body and nature. Read about human organs (heart, kidney, blood), vitamins and their diseases, and basic plant functions like photosynthesis.

If you just focus on these basic topics from school books, General Science will become your most scoring subject.

Important General Science Questions for RRB ALP

Now you have understood what topics to study. But just reading theory is not enough. If you really want to score good marks, you should practice exam-level questions. Below, we have provided top repeated questions for Physics, Chemistry, and Biology to make your preparation complete.

Physics Questions for RRB ALP

Q1. What is the SI unit of Force?

(A) Joule
(B) Newton
(C) Watt
(D) Pascal

Answer: (B) Newton

Explanation: Force is measured in Newtons. Joule is for Energy, Watt is for Power, and Pascal is used to measure Pressure.

Q2. Which instrument is used to measure electric current in a circuit?

(A) Voltmeter
(B) Galvanometer
(C) Ammeter
(D) Barometer

Answer: (C) Ammeter

Explanation: An Ammeter is always connected in a series circuit to measure the electric current flowing through it.

Q3. Which type of mirror is used by drivers as a rear-view mirror in vehicles?

(A) Plane Mirror
(B) Concave Mirror
(C) Convex Mirror
(D) Cylindrical Mirror

Answer: (C) Convex Mirror

Explanation: A convex mirror is used because it makes objects look smaller, helping the driver see a very wide view of the traffic behind them.

Q4. Why does the clear sky appear blue during the daytime?

(A) Reflection of light
(B) Refraction of light
(C) Scattering of light
(D) Dispersion of light

Answer: (C) Scattering of light

Explanation: The tiny dust and gas particles in the air scatter the blue light from the sun in all directions because it has shorter waves.

Q5. Sound waves cannot travel through which of the following?

(A) Solid
(B) Liquid
(C) Gas
(D) Vacuum

Answer: (D) Vacuum

Explanation: Sound needs a solid, liquid, or gas medium to travel. In a vacuum (like outer space), there is no air, so sound cannot travel at all.

Q6. What is the rate of change of velocity called?

(A) Speed
(B) Momentum
(C) Force
(D) Acceleration

Answer: (D) Acceleration

Explanation: When you speed up a vehicle, the velocity changes. This change in speed over time is known as acceleration.

Q7. The energy possessed by a body due to its motion is called:

(A) Potential Energy
(B) Kinetic Energy
(C) Chemical Energy
(D) Heat Energy

Answer: (B) Kinetic Energy

Explanation: Anything that is moving, like a running train or a flying bird, has Kinetic energy.

Q8. Ohm is the SI unit of which physical quantity?

(A) Electric Current
(B) Voltage
(C) Electrical Resistance
(D) Power

Answer: (C) Electrical Resistance

Explanation: Resistance acts like a speed breaker for electricity, and it is measured in Ohms.

Q9. What are the primary colors of light?

(A) Red, Yellow, Blue
(B) Red, Green, Blue
(C) Orange, Green, Violet
(D) Red, White, Black

Answer: (B) Red, Green, Blue

Explanation: In physics, the primary colors of light are Red, Green, and Blue. Mixing these colors can create any other color on screens.

Q10. Which device converts mechanical energy into electrical energy?

(A) Electric Motor
(B) Transformer
(C) Dynamo (Generator)
(D) Battery

Answer: (C) Dynamo (Generator)

Explanation: A dynamo or electric generator takes mechanical energy (like turning a wheel) and turns it into electrical energy.

Chemistry Questions for RRB ALP

Q1. Which of the following metals is liquid at room temperature?

(A) Iron
(B) Zinc
(C) Mercury
(D) Aluminum

Answer: (C) Mercury

Explanation: Mercury is the only common metal that remains liquid at room temperature. It is commonly used in thermometers.

Q2. What is the chemical name of common salt used in food?

(A) Sodium Carbonate
(B) Sodium Chloride
(C) Potassium Chloride
(D) Sodium Bicarbonate

Answer: (B) Sodium Chloride

Explanation: The chemical formula of common salt is NaCl, which stands for Sodium Chloride.

Q3. What is the pH value of pure water?

(A) 6
(B) 7
(C) 8
(D) 14

Answer: (B) 7

Explanation: Pure water is neutral. On the pH scale (0–14), a pH value of 7 represents complete neutrality.

Q4. Which acid is present in lemon or orange?

(A) Lactic acid
(B) Acetic acid
(C) Citric acid
(D) Formic acid

Answer: (C) Citric acid

Explanation: Citrus fruits such as lemons and oranges contain citric acid. Lactic acid is present in curd.

Q5. Which gas is commonly known as “Laughing Gas”?

(A) Nitric oxide
(B) Nitrogen dioxide
(C) Nitrous oxide
(D) Ammonia

Answer: (C) Nitrous oxide

Explanation: Nitrous oxide (N₂O) is called laughing gas because inhaling it produces a feeling of relaxation and laughter.

Q6. Which of the following is the hardest naturally occurring substance?

(A) Gold
(B) Iron
(C) Diamond
(D) Graphite

Answer: (C) Diamond

Explanation: Diamond is the hardest natural substance and is composed entirely of carbon atoms arranged in a strong crystal structure.

Q7. Which highly reactive metal is stored under kerosene oil?

(A) Sodium
(B) Calcium
(C) Magnesium
(D) Copper

Answer: (A) Sodium

Explanation: Sodium is very reactive and reacts violently with air and water. Therefore, it is stored safely under kerosene.

Q8. Bauxite is an ore of which metal?

(A) Iron
(B) Copper
(C) Gold
(D) Aluminium

Answer: (D) Aluminium

Explanation: Bauxite is the main rock or ore from which pure aluminium is extracted.

Q9. Which gas is filled in electric bulbs to prevent the filament from burning?

(A) Oxygen
(B) Hydrogen
(C) Argon
(D) Carbon dioxide

Answer: (C) Argon

Explanation: Argon is an unreactive noble gas. It does not react with the hot tungsten filament in bulbs, which increases the bulb’s life.

Q10. What is the chemical name of Baking Soda?

(A) Sodium Carbonate
(B) Sodium Bicarbonate
(C) Calcium Carbonate
(D) Sodium Hydroxide

Answer: (B) Sodium Bicarbonate

Biology Questions for RRB ALP

Q1. Which part of the cell is known as the “Powerhouse of the Cell”?

(A) Nucleus
(B) Ribosome
(C) Mitochondria
(D) Lysosome

Answer: (C) Mitochondria

Explanation: Mitochondria produce energy for the cell to function properly, just like a powerhouse generates electricity for a city.

Q2. The disease “Scurvy” is caused by the deficiency of which vitamin?

(A) Vitamin A
(B) Vitamin B
(C) Vitamin C
(D) Vitamin D

Answer: (C) Vitamin C

Explanation: A lack of Vitamin C causes Scurvy, which leads to bleeding gums. You can get Vitamin C by eating sour fruits like lemon.

Q3. Which blood group is known as the “Universal Donor”?

(A) AB Positive
(B) O Negative
(C) A Positive
(D) B Negative

Answer: (B) O Negative

Explanation: People with an O Negative blood group can give blood to anyone in an emergency because their blood does not have A, B, or Rh antigens.

Q4. Which tissue in plants is responsible for the transport of water from roots to leaves?

(A) Phloem
(B) Stomata
(C) Xylem
(D) Cortex

Answer: (C) Xylem

Explanation: A simple trick to remember this: “Xylem” sounds like “Jal” (water). So, Xylem transports water. Phloem transports food.

Q5. Which gland in the human body is called the “Master Gland”?

(A) Thyroid Gland
(B) Pituitary Gland
(C) Adrenal Gland
(D) Pancreas

Answer: (B) Pituitary Gland

Explanation: The pituitary gland is located in the brain. It is called the master gland because it controls the working of almost all other glands.

Q6. Malaria is caused by which of the following?

(A) Virus
(B) Bacteria
(C) Fungi
(D) Protozoa

Answer: (D) Protozoa

Explanation: Malaria is caused by a protozoan parasite called Plasmodium, which is spread by the bite of infected female Anopheles mosquitoes.

Q7. What is the longest and strongest bone in the human body?

(A) Tibia
(B) Radius
(C) Femur
(D) Fibula

Answer: (C) Femur

Explanation: The Femur, also known as the thigh bone, is the longest, heaviest, and strongest bone in the entire human body.

Q8. Which instrument is used by doctors to measure blood pressure?

(A) Stethoscope
(B) Sphygmomanometer
(C) Thermometer
(D) Barometer

Answer: (B) Sphygmomanometer

Explanation: A sphygmomanometer is the medical machine (usually with an arm cuff and a pump) used to check your blood pressure.

Q9. The gas released by plants during the process of photosynthesis is:

(A) Carbon dioxide
(B) Nitrogen
(C) Oxygen
(D) Hydrogen

Answer: (C) Oxygen

Explanation: During photosynthesis, plants take in Carbon Dioxide from the air and release pure Oxygen, which helps humans breathe.

Q10. Which organ in the human body is responsible for filtering the blood and making urine?

(A) Liver
(B) Kidney
(C) Heart
(D) Lungs

Answer: (B) Kidney

Explanation: The kidneys act like water filters in our body. They clean the waste and extra water from our blood, which comes out as urine.

5 Simple Tips to Prepare for General Science for RRB ALP

You do not have the time to read thick science books, and honestly, you do not need to. Here are 5 smart and easy tips to cover this entire section quickly:

• Use 10th Standard Books Only: Do not buy heavy competitive exam books. A simple 10th-level NCERT summary book or Lucent’s GK is more than enough.
• Memorize the Charts: Railway exams love asking direct facts. Make a small list of SI Units, Vitamin diseases, and pH values. Stick it on your wall and read it daily.
• Focus on Daily Life Examples: Stop trying to memorize tough definitions. Read about real-life examples, like why a pencil looks bent in water or why we use baking soda.
• Do Not Mug Up Big Equations: The ALP exam rarely asks you to balance long chemical equations or solve tough physics numericals. Focus on direct facts and basic one-step formulas.
• Practice Previous Year Papers: Railway exam questions mostly match with each other’s science questions. Solve the previous year’s science questions of RRB Group D, NTPC, and ALP. You will see the exact same questions repeating!

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