प्रश्न और उत्तर का अभ्यास करें
8 4 उत्तर : 2. "Sublimation"
4 उत्तर : 2. "Red and Blue"
4 उत्तर : 2. "the chain reaction in nuclear reactor is controlled"
4 उत्तर : 1. "Ionic bond"
4 उत्तर : 2. "Fluroine"
4 उत्तर : 1. "Acid"
4 उत्तर : 2. "Real gases"
4 उत्तर : 2. "Negative catalyst"
प्र: A mixture of sand and naphthalene can be seperated by __________ 1162 05b5cc7c2e4d2b41977750ae3
5b5cc7c2e4d2b41977750ae3- 1Fractional distillationfalse
- 2Sublimationtrue
- 3Chromatographyfalse
- 4Any of themfalse
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उत्तर : 2. "Sublimation"
व्याख्या :
Answer: B) Sublimation Explanation:
प्र: Wavelength of which of the following colours of the visible spectrum of light are maximally absorbed by green plants________ 1315 05b5cc7c2e4d2b41977750ade
5b5cc7c2e4d2b41977750ade- 1Green and Yellowfalse
- 2Red and Bluetrue
- 3Green and Redfalse
- 4Blue and Yellowfalse
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उत्तर : 2. "Red and Blue"
व्याख्या :
Answer: B) Red and Blue Explanation:
प्र: The difference between a nuclear reactor and atomic bomb is that ___________ 1489 05b5cc7c2e4d2b41977750ad9
5b5cc7c2e4d2b41977750ad9- 1no chain reaction takes place in nuclear reactor while in the atomic bomb there is a chain reactionfalse
- 2the chain reaction in nuclear reactor is controlledtrue
- 3the chain reaction in nuclear reactor is not controlledfalse
- 4no-chain reaction takes place in atomic bomb while it takes place in nuclear reactorfalse
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उत्तर : 2. "the chain reaction in nuclear reactor is controlled"
व्याख्या :
Answer: B) the chain reaction in nuclear reactor is controlled Explanation:
प्र: A bond formed by the transfer of electrons between atoms of the elements is called 1198 05b5cc7c2e4d2b41977750ad4
5b5cc7c2e4d2b41977750ad4- 1Ionic bondtrue
- 2Covalent bondfalse
- 3Co-ordinate bondfalse
- 4Hydrogen bondfalse
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उत्तर : 1. "Ionic bond"
व्याख्या :
Answer: A) Ionic bond Explanation:
प्र: Of the following elements, which one has the same oxidation state in all of its compounds? 1174 05b5cc7c2e4d2b41977750acf
5b5cc7c2e4d2b41977750acf- 1Hydrogenfalse
- 2Fluroinetrue
- 3Carbonfalse
- 4oxygenfalse
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उत्तर : 2. "Fluroine"
व्याख्या :
Answer: B) Fluroine Explanation:
प्र: Blue litmus paper is converted into red in solution of _______ 1539 05b5cc7c2e4d2b41977750aca
5b5cc7c2e4d2b41977750aca- 1Acidtrue
- 2Basefalse
- 3Alkalifalse
- 4Saltfalse
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उत्तर : 1. "Acid"
व्याख्या :
Answer: A) Acid Explanation:
प्र: Van der Waal's equation explains the behaviour of _____ 1528 05b5cc7c2e4d2b41977750ac5
5b5cc7c2e4d2b41977750ac5- 1Ideal gasesfalse
- 2Real gasestrue
- 3Mixture of gasesfalse
- 4Diatomic gasesfalse
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उत्तर : 2. "Real gases"
व्याख्या :
Answer: B) Real gases Explanation:
प्र: TEL minimise the knocking effect when mixed with petrol, it acts as_______ 1593 05b5cc7c2e4d2b41977750ac0
5b5cc7c2e4d2b41977750ac0- 1Positive catalystfalse
- 2Negative catalysttrue
- 3Auto catalystfalse
- 4Induced catalystfalse
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उत्तर : 2. "Negative catalyst"
व्याख्या :
Answer: B) Negative catalyst Explanation:
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