If A means +, B means −, C means × and D means ÷, then 20 D 5 C 3 A 4 B 6 = ?
A. 10
B. 8
C. 12
D. 14
View answer and explanation
Correct Option: A
20 / 5 x 3 + 4 - 6 = 12 + 4 - 6 = 10.
Q51General Science
Easy
The normal blood pressure of a healthy adult is about:
A. 100/60 mm Hg
B. 80/120 mm Hg
C. 140/100 mm Hg
D. 120/80 mm Hg
View answer and explanation
Correct Option: D
Systolic over diastolic.
Q52General Science
Easy
The cell wall of a plant cell is made mainly of:
A. Protein
B. Cellulose
C. Fat
D. Chitin
View answer and explanation
Correct Option: B
Cellulose gives the plant cell its shape and strength.
Q53General Science
Easy
The control centre of the cell is the:
A. Cytoplasm
B. Cell membrane
C. Nucleus
D. Vacuole
View answer and explanation
Correct Option: C
It contains the DNA.
Q54General Science
Easy
Diabetes is caused by a lack of:
A. Adrenaline
B. Thyroxine
C. Insulin
D. Growth hormone
View answer and explanation
Correct Option: C
Without insulin, blood sugar rises.
Q55General Science
Medium
Soap is the sodium or potassium salt of:
A. Mineral acids
B. Long-chain fatty acids
C. Amino acids
D. Sulphuric acid
View answer and explanation
Correct Option: B
Soap molecules have a water-loving and an oil-loving end.
Q56General Science
Easy
The loss of water vapour from leaves is called:
A. Transpiration
B. Respiration
C. Photosynthesis
D. Germination
View answer and explanation
Correct Option: A
It helps pull water up from the roots.
Q57General Science
Medium
The heat absorbed when a solid melts without any change in temperature is called:
A. Latent heat of vaporisation
B. Specific heat
C. Latent heat of fusion
D. Heat capacity
View answer and explanation
Correct Option: C
It is used to break the bonds between particles.
Q58General Science
Easy
The chemical formula of methane is:
A. C₂H₄
B. C₂H₆
C. CO₂
D. CH₄
View answer and explanation
Correct Option: D
Methane is the simplest alkane.
Q59General Science
Medium
A hydraulic lift works on:
A. Newton's first law
B. Archimedes' principle
C. Pascal's law
D. Bernoulli's principle only
View answer and explanation
Correct Option: C
Pressure applied to a confined liquid is transmitted equally in all directions.
Q60General Science
Medium
The electronic configuration of sodium (atomic number 11) is:
A. 2, 7, 2
B. 2, 9
C. 2, 8, 2
D. 2, 8, 1
View answer and explanation
Correct Option: D
Shells fill as 2, 8 and then the rest.
Q61General Science
Easy
The earth wire in a domestic circuit protects us from:
A. Short circuits in the meter
B. High voltage from the grid
C. Electric shock due to current leakage
D. Power cuts
View answer and explanation
Correct Option: C
Leakage current flows safely to the ground.
Q62General Science
Easy
The weight of a 5 kg mass on Earth (g = 9.8 m/s²) is:
A. 5 N
B. 49 N
C. 14.8 N
D. 4.9 N
View answer and explanation
Correct Option: B
W = mg = 5 x 9.8 = 49 N.
Q63General Science
Easy
The loudness of a sound depends on its:
A. Frequency
B. Amplitude
C. Pitch
D. Time period
View answer and explanation
Correct Option: B
Larger amplitude means a louder sound.
Q64General Science
Easy
Heat is transferred through liquids mainly by:
A. Conduction
B. Convection
C. Radiation
D. Reflection
View answer and explanation
Correct Option: B
Warm liquid rises and cooler liquid sinks.
Q65General Science
Easy
The chemical formula of calcium carbonate is:
A. CaCl₂
B. CaO
C. Ca(OH)₂
D. CaCO₃
View answer and explanation
Correct Option: D
It is found in limestone and marble.
Q66General Science
Medium
Cream is separated from milk by:
A. Distillation
B. Filtration
C. Centrifugation
D. Sublimation
View answer and explanation
Correct Option: C
Spinning fast separates the lighter cream.
Q67General Science
Easy
0 °C on the Kelvin scale is about:
A. -273 K
B. 0 K
C. 100 K
D. 273 K
View answer and explanation
Correct Option: D
K = °C + 273.
Q68General Science
Easy
Tuberculosis is caused by a:
A. Fungus
B. Virus
C. Bacterium
D. Protozoan
View answer and explanation
Correct Option: C
Mycobacterium tuberculosis.
Q69General Science
Easy
Painting iron prevents rusting because the paint:
A. Changes iron into steel
B. Makes the iron harder
C. Keeps out air and moisture
D. Adds zinc to the surface
View answer and explanation
Correct Option: C
Rusting needs both oxygen and water.
Q70General Science
Easy
The speed of light in vacuum is about:
A. 3 × 10^8 m/s
B. 3 × 10^6 m/s
C. 343 m/s
D. 3 × 10^5 m/s
View answer and explanation
Correct Option: A
About 3 lakh km per second.
Q71General Science
Easy
An object floats in a liquid when its density is:
A. More than that of the liquid
B. Less than that of the liquid
C. Equal to zero
D. Twice that of the liquid
View answer and explanation
Correct Option: B
Less dense objects float.
Q72General Science
Easy
Fish breathe with:
A. Skin only
B. Lungs
C. Gills
D. Trachea
View answer and explanation
Correct Option: C
Gills take oxygen dissolved in water.
Q73General Science
Easy
The chemical formula of ammonia is:
A. N₂O
B. NH₄
C. NH₃
D. NO₂
View answer and explanation
Correct Option: C
One nitrogen and three hydrogen atoms.
Q74General Science
Easy
In plants, phloem carries:
A. Oxygen
B. Water only
C. Minerals only
D. Food
View answer and explanation
Correct Option: D
Xylem carries water and minerals.
Q75General Science
Easy
Which gas burns with a 'pop' sound?
A. Chlorine
B. Oxygen
C. Carbon dioxide
D. Hydrogen
View answer and explanation
Correct Option: D
This is the test for hydrogen.
Q76General Science
Medium
Growth hormone is secreted by the:
A. Pancreas
B. Thyroid gland
C. Adrenal gland
D. Pituitary gland
View answer and explanation
Correct Option: D
Too little causes dwarfism.
Q77General Science
Easy
The male sex hormone is:
A. Testosterone
B. Oestrogen
C. Insulin
D. Thyroxine
View answer and explanation
Correct Option: A
It is made in the testes.
Q78General Science
Easy
The SI unit of momentum is:
A. kg m/s
B. kg m/s²
C. N/m
D. J s
View answer and explanation
Correct Option: A
Momentum = mass x velocity.
Q79General Science
Medium
A body moving in a circle at constant speed has:
A. A constant velocity
B. Zero acceleration
C. An acceleration towards the centre
D. An acceleration away from the centre
View answer and explanation
Correct Option: C
Its direction keeps changing, so it has centripetal acceleration.
Q80General Science
Easy
Gregor Mendel did his experiments on heredity using:
A. Fruit flies
B. Pea plants
C. Mice
D. Wheat
View answer and explanation
Correct Option: B
He studied traits such as tall and short plants.
Q81General Science
Easy
If a charge of 30 C flows through a wire in 10 s, the current is:
A. 300 A
B. 3 A
C. 0.33 A
D. 20 A
View answer and explanation
Correct Option: B
I = Q / t = 3 A.
Q82General Science
Easy
The SI unit of temperature is the:
A. Kelvin
B. Celsius
C. Fahrenheit
D. Joule
View answer and explanation
Correct Option: A
Kelvin is one of the seven SI base units.
Q83General Science
Easy
A solution with a pH of less than 7 is:
A. Acidic
B. Basic
C. Neutral
D. Salty
View answer and explanation
Correct Option: A
pH 7 is neutral; above 7 is basic.
Q84General Science
Medium
Solder is an alloy of:
A. Copper and zinc
B. Lead and tin
C. Iron and nickel
D. Aluminium and copper
View answer and explanation
Correct Option: B
Its low melting point suits joining wires.
Q85General Science
Easy
Which gas turns lime water milky?
A. Hydrogen
B. Oxygen
C. Carbon dioxide
D. Nitrogen
View answer and explanation
Correct Option: C
It forms insoluble calcium carbonate.
Q86General Science
Medium
Which mirror always forms a virtual, erect and diminished image?
A. Plane mirror
B. Concave mirror
C. Convex mirror
D. Parabolic concave mirror
View answer and explanation
Correct Option: C
That is why convex mirrors are used as rear-view mirrors.
Q87General Science
Medium
Distilled water is:
A. A solution of salts
B. A mixture
C. An element
D. A pure substance
View answer and explanation
Correct Option: D
It is a compound of hydrogen and oxygen with nothing dissolved in it.
Q88General Science
Easy
Like magnetic poles:
A. Cancel each other
B. Attract each other
C. Have no effect on each other
D. Repel each other
View answer and explanation
Correct Option: D
North repels north and south repels south.
Q89General Science
Easy
Antacids used for acidity are:
A. Salts of strong acids only
B. Strong acids
C. Mild bases
D. Neutral substances
View answer and explanation
Correct Option: C
They neutralise excess stomach acid.
Q90General Science
Easy
Blood vessels that carry blood away from the heart are:
A. Capillaries only
B. Veins
C. Arteries
D. Lymph vessels
View answer and explanation
Correct Option: C
Veins bring blood back to the heart.
Q91General Awareness
Easy
The normal term of the Lok Sabha is:
A. 5 years
B. 4 years
C. 6 years
D. Permanent
View answer and explanation
Correct Option: A
The Rajya Sabha is a permanent house.
Q92General Awareness
Medium
India's first electric train ran on 3 February 1925 between:
A. Bombay VT and Kurla
B. Howrah and Bandel
C. Madras and Tambaram
D. Delhi and Ghaziabad
View answer and explanation
Correct Option: A
It ran on the Harbour line in Bombay.
Q93General Awareness
Easy
The headquarters of SEBI is in:
A. Kolkata
B. New Delhi
C. Mumbai
D. Chennai
View answer and explanation
Correct Option: C
SEBI regulates the securities market.
Q94General Awareness
Easy
The Preamble declares India a sovereign, socialist, secular, democratic:
A. Monarchy
B. Republic
C. Federation
D. Dominion
View answer and explanation
Correct Option: B
The head of state is elected.
Q95General Awareness
Easy
India's Mars Orbiter Mission (Mangalyaan) was launched in:
A. 2008
B. 2013
C. 2019
D. 2016
View answer and explanation
Correct Option: B
It reached Mars orbit in September 2014.
Q96General Awareness
Easy
The smallest state of India by area is:
A. Sikkim
B. Goa
C. Tripura
D. Manipur
View answer and explanation
Correct Option: B
Rajasthan is the largest.
Q97General Awareness
Easy
The largest tea-producing state of India is:
A. Tamil Nadu
B. Kerala
C. West Bengal
D. Assam
View answer and explanation
Correct Option: D
Assam produces about half of India's tea.
Q98General Awareness
Easy
The first Indian to win an individual Olympic gold medal was:
A. Milkha Singh
B. Neeraj Chopra
C. Leander Paes
D. Abhinav Bindra
View answer and explanation
Correct Option: D
He won the 10 m air rifle gold in Beijing 2008.
Q99General Awareness
Easy
The Jnanpith Award is given for:
A. Sports
B. Science
C. Literature
D. Music
View answer and explanation
Correct Option: C
It is one of India's highest literary awards.
Q100General Awareness
Easy
International Day of Yoga is observed on:
A. 21 June
B. 5 June
C. 21 March
D. 1 May
View answer and explanation
Correct Option: A
It was first observed in 2015.
Questions about this paper
What is the RRB Technician (Grade 1 Signal and Grade 3) 2026 question paper on this page?
It is an archived RRB Technician (Grade 1 Signal and Grade 3) 2026 paper with 100 questions, kept for practice. Where a source is credited on the page, the paper comes from that source.
Which subjects does RRB Technician Grade 3 CBT Practice Paper 03 (Exam Pattern, Solved Set) cover?
The 100 questions are grouped by subject: General Science (40), Quantitative Aptitude (25), Reasoning Ability (25) and General Awareness (10).
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