GK and GS practice
Engineering and PSU GK and GS Questions
Basic engineering, science and PSU GK for junior engineer, apprentice and technician exams at ISRO, SAIL, IOCL, BHEL and more.
- 40Questions
- 5Subjects
Basic Engineering 10
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1 Basic Engineering
A 12 V battery drives a current of 3 A through a resistor. What is the resistance?
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Answer: C. 4 ohm
By Ohm's law R = V / I = 12 / 3 = 4 ohm.
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2 Basic Engineering
What is the SI unit of power?
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Answer: A. Watt
Power is measured in watt, which equals one joule per second.
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3 Basic Engineering
The mechanical advantage of a simple lever is defined as:
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Answer: B. Load divided by effort
Mechanical advantage is the ratio of load to effort.
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4 Basic Engineering
Steel is an alloy of which two main elements?
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Answer: A. Iron and carbon
Steel is mainly iron with a small percentage of carbon.
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5 Basic Engineering
Which element is added to steel to make it stainless?
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Answer: D. Chromium
Stainless steel contains at least about 10.5 percent chromium, which resists rust.
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6 Basic Engineering
The chemical reaction between cement and water that makes concrete harden is called:
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Answer: D. Hydration
Cement gains strength through hydration with water.
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7 Basic Engineering
Which statement is the first law of thermodynamics?
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Answer: D. Energy can neither be created nor destroyed, only converted from one form to another
The first law of thermodynamics is the law of conservation of energy.
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8 Basic Engineering
Brass is an alloy of:
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Answer: D. Copper and zinc
Brass is made of copper and zinc, while bronze is copper and tin.
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9 Basic Engineering
What is the SI unit of electrical resistance?
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Answer: A. Ohm
Resistance is measured in ohm.
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10 Basic Engineering
The standard curing period used to test the compressive strength of concrete is:
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Answer: A. 28 days
Concrete cube strength is conventionally tested after 28 days of curing.
Computer Basics 6
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11 Computer Basics
How many bits are there in one byte?
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Answer: A. 8
One byte is made of 8 bits.
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12 Computer Basics
Which keyboard shortcut is used to copy selected text in Windows?
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Answer: C. Ctrl + C
Ctrl + C copies, Ctrl + V pastes, Ctrl + X cuts and Ctrl + Z undoes.
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13 Computer Basics
Which part of a computer is called its brain?
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Answer: B. CPU
The Central Processing Unit carries out all instructions.
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14 Computer Basics
Which of these memories loses its data when the power is switched off?
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Answer: D. RAM
RAM is volatile memory and is cleared when power is lost.
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15 Computer Basics
What is the full form of URL?
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Answer: A. Uniform Resource Locator
URL stands for Uniform Resource Locator, the address of a web page.
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16 Computer Basics
In common computing usage, one kilobyte (KB) is equal to how many bytes?
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Answer: A. 1024
One KB is 2^10, which is 1024 bytes.
PSU and Space 8
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17 PSU and Space
What is the full form of PSLV, the ISRO launch vehicle?
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Answer: A. Polar Satellite Launch Vehicle
PSLV stands for Polar Satellite Launch Vehicle.
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18 PSU and Space
The Satish Dhawan Space Centre, the main launch site of ISRO, is located at:
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Answer: B. Sriharikota
The launch centre is on Sriharikota island in Andhra Pradesh.
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19 PSU and Space
Where is the headquarters of BHEL (Bharat Heavy Electricals Limited)?
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Answer: B. New Delhi
BHEL is headquartered in New Delhi.
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20 PSU and Space
The Bhilai Steel Plant of SAIL is located in which state?
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Answer: A. Chhattisgarh
Bhilai Steel Plant is in Durg district of Chhattisgarh.
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21 PSU and Space
Where is the headquarters of DRDO?
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Answer: A. New Delhi
DRDO has its headquarters at DRDO Bhawan in New Delhi.
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22 PSU and Space
Where is the headquarters of Hindustan Aeronautics Limited (HAL)?
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Answer: D. Bengaluru
HAL is headquartered in Bengaluru, Karnataka.
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23 PSU and Space
Which type of upper stage is used in the ISRO launch vehicle GSLV?
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Answer: B. Cryogenic stage
GSLV uses a cryogenic upper stage burning liquid hydrogen and liquid oxygen.
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24 PSU and Space
Where is the headquarters of ISRO?
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Answer: C. Bengaluru
ISRO is headquartered in Bengaluru.
Science 10
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25 Science
The speed of light in vacuum is approximately:
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Answer: A. 3 x 10^8 m/s
Light travels at about 3 x 10^8 metres per second in vacuum.
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26 Science
What is the pH of pure water at 25 degrees Celsius?
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Answer: D. 7
Pure water is neutral and has a pH of 7.
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27 Science
What is the SI unit of force?
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Answer: C. Newton
Force is measured in newton, equal to one kg m/s^2.
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28 Science
What is the atomic number of carbon?
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Answer: C. 6
Carbon has 6 protons, so its atomic number is 6.
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29 Science
Which gas is commonly used in fire extinguishers?
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Answer: B. Carbon dioxide
Carbon dioxide does not support burning and smothers the fire.
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30 Science
Which of the following cannot travel through a vacuum?
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Answer: A. Sound
Sound needs a material medium, while electromagnetic waves do not.
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31 Science
Which is the lightest element?
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Answer: C. Hydrogen
Hydrogen has the lowest atomic mass of all elements.
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32 Science
The acceleration due to gravity on the surface of the Earth is approximately:
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Answer: D. 9.8 m/s^2
The standard value of g on Earth is about 9.8 m/s^2.
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33 Science
The chemical name of common salt is:
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Answer: C. Sodium chloride
Common salt has the formula NaCl, which is sodium chloride.
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34 Science
Which type of lens is used to correct myopia (short sightedness)?
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Answer: C. Concave lens
A concave lens diverges light so that the image falls on the retina.
Static GK 6
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35 Static GK
Which is the longest river of India, flowing mostly within Indian territory?
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Answer: D. Ganga
The Ganga, about 2,525 km, is the longest river flowing mostly within India.
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36 Static GK
Which mountain peak is the highest above sea level in the world?
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Answer: D. Mount Everest
Mount Everest is about 8,849 m high.
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37 Static GK
Which is the national animal of India?
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Answer: B. Tiger
The Bengal tiger is the national animal of India.
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38 Static GK
On which date did the Constitution of India come into effect?
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Answer: D. 26 January 1950
The Constitution came into force on 26 January 1950, celebrated as Republic Day.
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39 Static GK
Who was the first Prime Minister of India?
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Answer: C. Jawaharlal Nehru
Jawaharlal Nehru became the first Prime Minister in 1947.
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40 Static GK
Which is the largest Indian state by area?
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Answer: A. Rajasthan
Rajasthan covers about 342,239 sq km.
Set complete