प्रश्न और उत्तर का अभ्यास करें
8 4 4 4 4 4 4 4 4
प्र: Which of the following was the first planet in the solar system to be visited by a Spacecraft? 1824 05c78ea84f40b900d03578d54
5c78ea84f40b900d03578d54- 1Mercuryfalse
- 2Venustrue
- 3Marsfalse
- 4Jupiterfalse
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उत्तर : 2. "Venus"
प्र: Which of the following statements is incorrect about the Planet Mars? 3411 05c78ea23eee6235918b5d7dd
5c78ea23eee6235918b5d7dd- 1It has two permanent polar ice capsfalse
- 2After the Moon, it is the brightest object in our night skytrue
- 3Liquid water cannot exist on the surface of Mars due to low atmospheric pressurefalse
- 4Mars is less dense than Earthfalse
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उत्तर : 2. "After the Moon, it is the brightest object in our night sky"
प्र: Which of the following was the first planet to have its motions plotted across the sky during the second millennium BC? 1829 05c78e968f40b900d03578d4f
5c78e968f40b900d03578d4f- 1Marsfalse
- 2Venustrue
- 3Jupiterfalse
- 4Saturnfalse
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उत्तर : 2. "Venus"
प्र: Mars Atmosphere and Volatile Evolution Mission (MAVEN) is a space probe developed to study the atmosphere of Mars. It has been developed by _? 1596 05c78e928f40b900d03578d4a
5c78e928f40b900d03578d4a- 1Indian Space Research Organisation (ISRO)false
- 2China National Space Administration (CNSA)false
- 3National Aeronautics and Space Administration (NASA)true
- 4Russian Federal Space Agency (RFSA)false
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उत्तर : 3. "National Aeronautics and Space Administration (NASA)"
प्र: Which of the following is the most commonly used chemical for ripening of mangoes in India? 1819 05c78e8d5f40b900d03578d45
5c78e8d5f40b900d03578d45- 1Potassium lodidefalse
- 2Silver lodidefalse
- 3Ammonium Nitratefalse
- 4Calcium Carbidetrue
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उत्तर : 4. "Calcium Carbide"
प्र: Which of the following are the most and the least electronegative elements in the periodic table? 1387 05c78e896eee6235918b5d7d8
5c78e896eee6235918b5d7d8- 1Fluorine and Caesiumtrue
- 2Hydrogen and Heliumfalse
- 3Carbon and Oxygenfalse
- 4Chlorine and Fluorinefalse
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उत्तर : 1. "Fluorine and Caesium"
प्र: Thin lamination is used in a transformer to reduce: 1855 05c78e818eee6235918b5d7d3
5c78e818eee6235918b5d7d3- 1Eddy current lossestrue
- 2Hysteresis lossesfalse
- 3Corona lossesfalse
- 4None of the abovefalse
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उत्तर : 1. "Eddy current losses"
प्र: Which of the following statements is incorrect about a Plane Mirror? 2172 05c78e7b6f40b900d03578d40
5c78e7b6f40b900d03578d40- 1The focal length of a plane mirror is infinityfalse
- 2Its optical power is onetrue
- 3It forms a virtual image of a real objectfalse
- 4It is used in constructing periscopefalse
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उत्तर : 2. "Its optical power is one"
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