Science GK Practice Question and Answer
8 Q: Capacitors are fitted to increase the power coefficient.
2342 05ef4162e7c1ec61320b5a5b8
5ef4162e7c1ec61320b5a5b8- 1parallel to the supplytrue
- 2By putting resistance to supplyfalse
- 3In the supply chainfalse
- 4None of thesefalse
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Answer : 1. "parallel to the supply"
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.
Q: Solder wire is made?
932 05ef415d2bea49d16b47d3a44
5ef415d2bea49d16b47d3a44- 1Land and tintrue
- 2Zinc and copperfalse
- 3copper and leadfalse
- 4None of thesefalse
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Answer : 1. "Land and tin"
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.
Q: The number of ossicles in the ear of mammals is
590 064424f9b0d865d025e66385d
64424f9b0d865d025e66385d- 12false
- 23true
- 34false
- 45false
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Answer : 2. "3"
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.
Q: Beta biodiversity is an example of
1221 062287439c17ed1454592457d
62287439c17ed1454592457d- 1Run of Kutchfalse
- 2Rajasthanfalse
- 3Indiatrue
- 4Asiafalse
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Answer : 3. "India "
Explanation :
It is the number of species unique to each environment that is used to calculate species diversity between two nearby ecosystems. Considering the above slope example, the species diversity between any two patches and their communities in that particular slope represents beta diversity.
Q: Which of the following is NOT an example of Pteridophyta?
475 0643918511ce944a93ea1c091
643918511ce944a93ea1c091- 1Funariatrue
- 2Selaginellafalse
- 3Equisetumfalse
- 4Pterisfalse
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Answer : 1. "Funaria "
Q: Which of the following hitting methods has the highest power factor?
1356 05ef417b67c1ec61320b5a6c6
5ef417b67c1ec61320b5a6c6- 1heating resistancetrue
- 2induction heatingfalse
- 3Arc heatingfalse
- 4Dielectric heatingfalse
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Answer : 1. "heating resistance"
Q: Why is sodium stored in kerosene?
768 0611b646accbc2b477b6dc1e8
611b646accbc2b477b6dc1e8- 1To maintain in its original formfalse
- 2It gets oxidised in airtrue
- 3evaporation starts in the airfalse
- 4it starts burning in airfalse
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Answer : 2. "It gets oxidised in air"
Q: How many bones are present in human ears?
719 061d6b8440499556d96b50350
61d6b8440499556d96b50350- 16true
- 29false
- 34false
- 410false
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