प्रश्न और उत्तर का अभ्यास करें
8 4 उत्तर : 2. "Zeroth law of thermodynamics"
4 उत्तर : 1. "Moseley's work on X-ray spectra"
4 उत्तर : 1. "The egg will shrink"
4 उत्तर : 3. "Electrode potential of both electrodes equalizes"
4 उत्तर : 4. "Blood is coagulated and the blood vessels are sealed"
4 उत्तर : 4. "Hydro metallurgy"
4 उत्तर : 3. "poling"
4 उत्तर : 4. "Life found in space and on other satellite"
प्र: "If a system A is in thermal equilibrium with B and B is in thermal equilibrium with C, then A and C are in equilibrium with each other". This is a statement of 1456 05b5cc7c2e4d2b41977750abb
5b5cc7c2e4d2b41977750abb- 1Cyclic rutefalse
- 2Zeroth law of thermodynamicstrue
- 3First law of thermodynamicsfalse
- 4Second law of thermodynamicsfalse
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उत्तर : 2. "Zeroth law of thermodynamics"
व्याख्या :
Answer: B) Zeroth law of thermodynamics Explanation:
प्र: Modern periodic table is based on atomic number of the elements. The significance of atomic number was proved by the experiment of ________ 1104 05b5cc7c2e4d2b41977750ab6
5b5cc7c2e4d2b41977750ab6- 1Moseley's work on X-ray spectratrue
- 2Bragg's work on X-ray diffractionfalse
- 3Mulliken's oil drop experimentfalse
- 4Discovery of X-ray by Roentgenfalse
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उत्तर : 1. "Moseley's work on X-ray spectra"
व्याख्या :
Answer: A) Moseley's work on X-ray spectra Explanation:
प्र: The hard Shell of an egg was dissolved in HCL. The egg was then placed in a concentration solution of NaCl. What will happens ______ 1719 05b5cc7c2e4d2b41977750ab1
5b5cc7c2e4d2b41977750ab1- 1The egg will shrinktrue
- 2The egg will swellfalse
- 3The egg will become harderfalse
- 4There will be hardly any visible changefalse
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उत्तर : 1. "The egg will shrink"
व्याख्या :
Answer: A) The egg will shrink Explanation:
प्र: The electrochemical cell stops working after some time because ________ 1508 05b5cc7c2e4d2b41977750aac
5b5cc7c2e4d2b41977750aac- 1Electrode potential of both the electrodes becomes zerofalse
- 2One of electrodes completely vanishesfalse
- 3Electrode potential of both electrodes equalizestrue
- 4The reaction reverses its directionfalse
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उत्तर : 3. "Electrode potential of both electrodes equalizes"
व्याख्या :
Answer: C) Electrode potential of both electrodes equalizes Explanation:
प्र: The bleeding of a wound is stopped by the application of ferric chloride because_____ 1352 05b5cc7c2e4d2b41977750aa7
5b5cc7c2e4d2b41977750aa7- 1Ferric chloride seals the blood vesselsfalse
- 2Blood starts flowing in the opposite directionfalse
- 3Blood reacts and a solid is formed which seals the blood vesselsfalse
- 4Blood is coagulated and the blood vessels are sealedtrue
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उत्तर : 4. "Blood is coagulated and the blood vessels are sealed"
व्याख्या :
Answer: D) Blood is coagulated and the blood vessels are sealed Explanation:
प्र: Gold and silver are extracted from their respective ores by _______ 1523 05b5cc7c2e4d2b41977750aa2
5b5cc7c2e4d2b41977750aa2- 1Smeltingfalse
- 2Roastingfalse
- 3Leachingfalse
- 4Hydro metallurgytrue
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उत्तर : 4. "Hydro metallurgy"
व्याख्या :
Answer: D) Hydro metallurgy Explanation:
प्र: Which of the following processes is used to remove reducible oxides from the metal? 1730 05b5cc7c2e4d2b41977750a9d
5b5cc7c2e4d2b41977750a9d- 1liquationfalse
- 2cupellationfalse
- 3polingtrue
- 4electro refiningfalse
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उत्तर : 3. "poling"
व्याख्या :
Answer: C) poling Explanation:
प्र: In exo-biology we study about ________ 2807 05b5cc7c2e4d2b41977750a98
5b5cc7c2e4d2b41977750a98- 1External structure of living beingsfalse
- 2Life present on the earthfalse
- 3Life present in the other layer of earth atmospherefalse
- 4Life found in space and on other satellitetrue
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उत्तर : 4. "Life found in space and on other satellite"
व्याख्या :
Answer: D) Life found in space and on other satellite Explanation:
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