Science General Knowledge Quiz with Answers
Which of the following is not a non-conventional source of energy?
(A) Solar energy
(B) Natural gas
(C) Wind energy
(D) Tidal energy
Correct Answer : B
Explanation :
Natural Gas is not a non-conventional source of energy. It is a fossil fuel that is formed from the remains of plants and animals over millions of years. Natural gas is a non-renewable source of energy and is often used for heating and cooking.
The blood of which of the following animals is similar to that of humans?
(A) Chimpanzee
(B) Rhesus monkey
(C) Gorilla
(D) Baboon
Correct Answer : A
Explanation :
The following animals have blood groups that are similar to humans: Chimpanzees. Gorillas. Orangutans.
What is the unit of Lumen?
(A) Light intensity
(B) Flame flux
(C) Both A and B
(D) None of these
Correct Answer : B
Explanation :
The SI unit of luminous flux is the lumen (lm). One lumen is defined as the luminous flux of light produced by a light source that emits 1 cd of luminous intensity over a solid angle of 1 sr. In other systems of units, luminous flux may have units of power.
Which chromosome determines the male sex in humans?
(A) X-chromosome
(B) Y-chromosome
(C) W-chromosome
(D) Z-chromosome
Correct Answer : B
Explanation :
Each person normally has one pair of sex chromosomes in each cell. The Y chromosome is present in males, who have one X and one Y chromosome, while females have two X chromosomes. Identifying genes on each chromosome is an active area of genetic research.
A color blind woman marries a normal man, her children will be-
(A) Common daughter and common son
(B) Son and daughter will be color blind
(C) Color blind daughter and normal son
(D) Carrier daughter and color blind son
Correct Answer : D
Explanation :
When a colorblind woman marries a man with normal eyesight, her daughters become carriers for the condition, and all sons become colorblind.
The number of ossicles in the ear of mammals is
(A) 2
(B) 3
(C) 4
(D) 5
Correct Answer : B
Explanation :
The mammalian middle ear contains three ossicles, which move the vibrations of the eardrum into waves in the liquid and membrane of the inward ear. There are three ossicles in every ear : Malleus, Incus, Stapes. As we have a couple of ears, so altogether there are 6 ossicles, or 3 sets of ossicles.
Which one of the following is the correct taxonomic hierarchy?
(A) Jagat (Kingdom) – Sangha – Gana – Vansh – Kula – Varga – Jati
(B) Jagat – Gana – Varga – Sandha – Kul – Vansh – Jati
(C) Jagat – Varga – Gana – Sangha – Kul – Jati – Vansh
(D) Jagat – Sangha – Varga – Gana – Kul – Vansh – Jati
Correct Answer : D
Explanation :
Thus, the correct answer is 'Jagat – Sangha – Varga – Gana – Kul – Vansh – Jati
Tungsten resistance to temperature rise?
(A) decreases
(B) increases
(C) there is no change
(D) All these
Correct Answer : B
Explanation :
At high temperatures, the tungsten filament gets hot and atoms in the filament vibrate more. The electrons in the current now collide more with the atoms & more energy is needed to push the current through the filament. Hence, the resistance of tungsten increases with temperature.
Solder wire is made?
(A) Land and tin
(B) Zinc and copper
(C) copper and lead
(D) None of these
Correct Answer : A
Explanation :
Solder is a fusible metal alloy used to create a permanent bond between metal workpieces. It is made up of 60% tin and 40% lead.
Capacitors are fitted to increase the power coefficient.
(A) parallel to the supply
(B) By putting resistance to supply
(C) In the supply chain
(D) None of these
Correct Answer : A
Explanation :
In an AC circuit, magnetic reversal due to phase difference between current and voltage occurs 50 or 60 times per second. A capacitor helps to improve the power factor by relieving the supply line of the reactive power.
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Rajesh Bhatia
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