Q. 1
General Knowledge
Difficulty: Easy
(1 Mark)
Hygrometer is used for measuring the
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Step-by-Step Explanation & Concept Rationale
A hygrometer is a weather instrument used to measure the amount of water vapor (humidity) in the atmosphere.
Q. 2
General Knowledge
Difficulty: Easy
(1 Mark)
Which of the following is a non-metal?
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Step-by-Step Explanation & Concept Rationale
Silicon is a chemical element with the symbol Si and atomic number 14; it is classified as a metalloid/non-metal.
Q. 3
General Knowledge
Difficulty: Easy
(1 Mark)
Which of the following pairs is not correct?
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Step-by-Step Explanation & Concept Rationale
Thomas Edison invented the incandescent light bulb and phonograph, while the bicycle was developed by others like Kirkpatrick Macmillan.
Q. 4
General Knowledge
Difficulty: Medium
(1 Mark)
Which of the following vitamins is associated with coagulation of blood?
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Step-by-Step Explanation & Concept Rationale
Vitamin K is essential for the synthesis of proteins required for blood clotting (coagulation).
Q. 5
General Knowledge
Difficulty: Easy
(1 Mark)
Bauxite is an ore of:
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Step-by-Step Explanation & Concept Rationale
Bauxite is the world's main source of aluminum, containing aluminum oxides and hydroxides.
Q. 6
General Knowledge
Difficulty: Easy
(1 Mark)
Which of the following is used in fire extinguishers?
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Step-by-Step Explanation & Concept Rationale
CO2 is used because it is denser than air and does not support combustion, effectively smothering the fire.
Q. 7
General Knowledge
Difficulty: Easy
(1 Mark)
What is the normal rate of heart beat in human beings?
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Step-by-Step Explanation & Concept Rationale
A normal resting heart rate for adults ranges from 60 to 100 beats per minute, with 72 being the standard average.
Q. 8
General Knowledge
Difficulty: Medium
(1 Mark)
Universal blood donor belongs to the blood group
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Step-by-Step Explanation & Concept Rationale
Group O-negative blood can be given to patients of any blood group because it lacks A, B, and Rh antigens.
Q. 9
General Knowledge
Difficulty: Easy
(1 Mark)
Which of the following is entirely a plant product?
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Step-by-Step Explanation & Concept Rationale
Agar-agar is a gelatinous substance derived from red algae (seaweed).
Q. 10
General Knowledge
Difficulty: Easy
(1 Mark)
In animals, the principal role of Vitamin E is
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Step-by-Step Explanation & Concept Rationale
Vitamin E is essential for maintaining reproductive health and fertility in various animal species.
Q. 11
General Knowledge
Difficulty: Easy
(1 Mark)
Hereditary disorders are the result of
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Step-by-Step Explanation & Concept Rationale
Genetic or hereditary disorders are caused by mutations or abnormalities in the DNA sequence within cell nuclei.
Q. 12
General Knowledge
Difficulty: Easy
(1 Mark)
Which of the following roofs provide better protection against heat?
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Step-by-Step Explanation & Concept Rationale
Asbestos was historically used for roofing because of its excellent thermal insulation and heat-resistant properties.
Q. 13
General Knowledge
Difficulty: Easy
(1 Mark)
Which of the following is not a vitamin?
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Step-by-Step Explanation & Concept Rationale
Trypsin is a digestive enzyme that breaks down proteins; the others are vitamins (C, B2, and B3).
Q. 14
General Knowledge
Difficulty: Easy
(1 Mark)
Which of the following is not the colour in rainbow?
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Step-by-Step Explanation & Concept Rationale
Black is the absence of visible light; the rainbow consists of Red, Orange, Yellow, Green, Blue, Indigo, and Violet.
Q. 15
General Knowledge
Difficulty: Easy
(1 Mark)
Oxidation results in ————
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Step-by-Step Explanation & Concept Rationale
Oxidation is a chemical reaction involving the loss of electrons by a molecule, atom, or ion.
Q. 16
General Knowledge
Difficulty: Easy
(1 Mark)
Which of the following substances exhibit the property of sublimation?
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Step-by-Step Explanation & Concept Rationale
Sublimation is the transition of a substance directly from the solid to the gas state; camphor exhibits this.
Q. 17
General Knowledge
Difficulty: Easy
(1 Mark)
The layer of atmosphere which affords protection to human beings against solar ultraviolet radiation is:
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Step-by-Step Explanation & Concept Rationale
The stratosphere contains the ozone layer, which absorbs most of the Sun's harmful ultraviolet radiation.
Q. 18
General Knowledge
Difficulty: Easy
(1 Mark)
Bronze is an alloy of
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Step-by-Step Explanation & Concept Rationale
Bronze is a metal alloy consisting primarily of copper, usually with tin as the main additive.
Q. 19
General Knowledge
Difficulty: Easy
(1 Mark)
An isotope of Uranium employed as fuel is
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Step-by-Step Explanation & Concept Rationale
Uranium-235 is the fissile isotope used as the primary fuel for nuclear reactors and weapons.
Q. 20
General Knowledge
Difficulty: Easy
(1 Mark)
Which of the following are the Rabi crops?
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Step-by-Step Explanation & Concept Rationale
Rabi crops are sown in winter and harvested in spring; wheat, barley, and mustard are typical examples in South Asia.
Q. 21
General Knowledge
Difficulty: Easy
(1 Mark)
Gypsum salt is:
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Step-by-Step Explanation & Concept Rationale
Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate.
Q. 22
General Knowledge
Difficulty: Easy
(1 Mark)
Which of the following is most important ore of aluminum?
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Step-by-Step Explanation & Concept Rationale
Bauxite is the primary commercial ore from which aluminum is extracted.
Q. 23
General Knowledge
Difficulty: Easy
(1 Mark)
Earth’s crust have the abundant reserves of ———
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Step-by-Step Explanation & Concept Rationale
These three elements are the most abundant in the Earth's crust by mass.
Q. 24
General Knowledge
Difficulty: Easy
(1 Mark)
Caustic soda is ———
💡
Step-by-Step Explanation & Concept Rationale
Caustic soda is the common name for the inorganic compound sodium hydroxide.
Q. 25
General Knowledge
Difficulty: Easy
(1 Mark)
Pure gold is ———
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Step-by-Step Explanation & Concept Rationale
Gold purity is measured in carats; 24-carat gold is 99.9% pure.
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