Basic Science Practice Question and Answer
8 Q: Write the name, which of the following is not a Kharif crop?
423 06392b5ccd319b37ca197d8e9
6392b5ccd319b37ca197d8e9- 1Tidefalse
- 2Paddyfalse
- 3Maizefalse
- 4Gramtrue
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Answer : 4. "Gram"
Explanation :
Kharif crops – The crops sown in June-July in the Indian subcontinent are called Kharif crops. These crops are harvested in October and November. These require high temperature and humidity at the time of sowing and dry environment at the time of ripening.
Main Kharif crops – Cotton, groundnut, paddy, millet, maize, sweet potato, urad, moong, moth cowpea (Chanwala), jowar, arhar, dhaincha, sugarcane, soybean, okra, sesame, guar, jute, flax etc.
Q: When is the Kharif crop harvested?
429 06392b28958400a550dde4cc7
6392b28958400a550dde4cc7- 1Marchfalse
- 2Junefalse
- 3Novembertrue
- 4Decemberfalse
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Answer : 3. "November"
Explanation :
Kharif crops – The crops sown in June-July in the Indian subcontinent are called Kharif crops. These crops are harvested in October and November. These require high temperature and humidity at the time of sowing and dry environment at the time of ripening.
Main Kharif crops – Cotton, groundnut, paddy, millet, maize, sweet potato, urad, moong, moth cowpea (Chanwala), jowar, arhar, dhaincha, sugarcane, soybean, okra, sesame, guar, jute, flax etc.
Q: Which of the gas is not known as green house gas?
1862 05edef8a5d1536a09d5745f35
5edef8a5d1536a09d5745f35- 1Methanefalse
- 2Hydrogentrue
- 3Nitrous oxidefalse
- 4Carbon dioxidefalse
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Answer : 2. "Hydrogen"
Explanation :
Whereas oxygen, nitrogen, and argon are not examples of greenhouse gases.
Q: Which of the following acids are formed during the formation of curd from milk?
806 05f72eb0cc0afea20a179237c
5f72eb0cc0afea20a179237c- 1Acetic acidfalse
- 2Ascorbic acidfalse
- 3Citric acidfalse
- 4Lactic acidtrue
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Answer : 4. "Lactic acid"
Explanation :
As an end product, lactic acid is produced which makes the milk thicker and finally converts it into curd.
Q: Iron is obtained by which of the following minerals?
947 05f756369c995cb2bd58dd43a
5f756369c995cb2bd58dd43a- 1Limestonefalse
- 2Pitch Blandfalse
- 3Monozite sandfalse
- 4Hematitetrue
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Answer : 4. "Hematite"
Explanation :
The iron minerals that are at present used as ores are hematite, magnetite, limonite, and siderite.
Q: Which of the following is not a natural polymer?
1363 05f61ca5b8561dc09cc77ffcc
5f61ca5b8561dc09cc77ffcc- 1Woolfalse
- 2Leatherfalse
- 3Nylontrue
- 4Silkfalse
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Answer : 3. "Nylon"
Explanation :
The correct answer is the Glyptal. The term "natural polymers" refers to compounds that are produced naturally. Glyptal is a synthetic polymer and does not exist in nature. The polymer substance formed from glycerol and phthalic acid is known commercially as glyptal.
Q: The first Indian Satellite Aryabhatta was launched in
1813 05f4cbaf5081699374e8068be
5f4cbaf5081699374e8068be- 11974false
- 21975true
- 31976false
- 41977false
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Answer : 2. "1975"
Explanation :
The Aryabhata spacecraft, named after the famous Indian astronomer, was India's first satellite; it was completely designed and fabricated in India and launched by a Soviet Kosmos-3M rocket from Kapustin Yar on April 19, 1975.
Q: Which of the following metals is used in accumulator batteries?
3225 15f746050a921aa16e68baaa1
5f746050a921aa16e68baaa1- 1Copperfalse
- 2Leadtrue
- 3Aluminumfalse
- 4Zincfalse
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Answer : 2. "Lead"
Explanation :
Thus, a metal used in storage batteries is Lead.