Basic Science Practice Question and Answer
8 4 Q:
5f86a3f4dcf12a01a141541a 4 Q:
5fc9d1f35c47b65b5b2c2480 4 Q:
5f86b534dcf12a01a141fc4f 4 Q:
5edefa608c4c964f73d37fc0 Answer : 3. "3.5%"
4 Q:
601406bc5beea84b8ecef91c 4 Q:
5ef415d2bea49d16b47d3a44 Answer : 1. "Land and tin"
4 Q:
5ee99605109b5d6e01623341 Answer : 3. "Sulphuric acid"
4 Q:
5f746c08a921aa16e68c30e5
Q: Which of the following is not easily oxidized at high temperature?
1148 05f86a3f4dcf12a01a141541a
5f86a3f4dcf12a01a141541a- 1Insulatorfalse
- 2Alloytrue
- 3Semi-conductorfalse
- 4conductorfalse
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Answer : 2. "Alloy"
Q: When we go upstairs in the atmosphere?
1148 05fc9d1f35c47b65b5b2c2480
5fc9d1f35c47b65b5b2c2480- 1heat is low and pressure increasesfalse
- 2temperature increases and pressure decreasesfalse
- 3Both temperature and pressure increasefalse
- 4Both temperature and pressure decreasetrue
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Answer : 4. "Both temperature and pressure decrease"
Q: The pigment that gives color to human skin is-
1147 05f86b534dcf12a01a141fc4f
5f86b534dcf12a01a141fc4f- 1Lysozymefalse
- 2Epidermisfalse
- 3Melanintrue
- 4Calaninfalse
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Answer : 3. "Melanin "
Q: The average salinity of sea water is
1139 05edefa608c4c964f73d37fc0
5edefa608c4c964f73d37fc0- 12%false
- 23%false
- 33.5%true
- 42.5%false
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Answer : 3. "3.5%"
Explanation :
The average salinity of sea water is 3.5% or 35 parts per thousand. In other words, for every 1 litre of sea water there is 35 grams of dissolved salts (NaCl) .
Q: Speed of sound is maximum?
1124 0601406bc5beea84b8ecef91c
601406bc5beea84b8ecef91c- 1in airfalse
- 2In waterfalse
- 3in vacuumfalse
- 4Steeltrue
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Answer : 4. "Steel"
Q: Solder wire is made?
1115 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: Which of the following acids is used in car batteries?
1113 05ee99605109b5d6e01623341
5ee99605109b5d6e01623341- 1Nitric acidfalse
- 2Hydrochloric acidfalse
- 3Sulphuric acidtrue
- 4Hydrofloric acidfalse
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Answer : 3. "Sulphuric acid"
Explanation :
sulphuric acid is used in car batteries.
Q: Leaving of the following in ponds and wells helps in controlling mosquitoes?
1110 05f746c08a921aa16e68c30e5
5f746c08a921aa16e68c30e5- 1crabfalse
- 2Dogfishfalse
- 3Gambusia fishtrue
- 4snailfalse
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Answer : 3. "Gambusia fish"
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