प्रश्न और उत्तर का अभ्यास करें
8प्र: LCD of 12 and 18 1885 05b5cc6b8e4d2b4197774d66b
5b5cc6b8e4d2b4197774d66b- 136true
- 242false
- 312false
- 46false
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उत्तर : 1. "36"
व्याख्या :
Answer: A) 36 Explanation: LCD is nothing but Lowest or Least Common Denominator Here LCD of 12 and 18 means LCD of two fractions with denominators 12 and 18 respectively. Therefore, LCM of 12 & 18 = 6 x 3 x 2 = 36 How to calculate LCD :: The lowest common denominator or least common denominator (LCD) is the least common multiple (LCM) of the denominators of a set of fractions.
प्र: Trichloroacetaldehyde was subject to Cannizzaro's reaction by using NaOH. The mixture of the products contains sodium trichloroacetate and another compound. The other compound is : 1884 05b5cc783e4d2b4197775023a
5b5cc783e4d2b4197775023a- 1Chloroformfalse
- 22, 2, 2-Trichloroethanoltrue
- 3Trichloromethanolfalse
- 42, 2, 2-Trichloropropanolfalse
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उत्तर : 2. "2, 2, 2-Trichloroethanol"
व्याख्या :
Answer: B) 2, 2, 2-Trichloroethanol Explanation: Cl|Cl-C-CHO|Cl→Cannizzaro's ReactionNaOH Cl|Cl-C-COONa|Cl+ Cl|Cl-C-CH2 |21Cl-OH
प्र: Direction(50): In the following, pick out the correct meaning of the following idioms:
Beat around the bush
1884 05d75d987e8e1523a0ad545a3
5d75d987e8e1523a0ad545a3Beat around the bush
- 1Avoid coming to the pointtrue
- 2Run awayfalse
- 3Deduce from the factsfalse
- 4Likely to happen soonfalse
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उत्तर : 1. "Avoid coming to the point "
प्र: According to a survey, which country has become the second largest smartphone market in the world? 1884 05b5cc6bfe4d2b4197774da92
5b5cc6bfe4d2b4197774da92- 1Japanfalse
- 2Chinafalse
- 3Indiatrue
- 4USAfalse
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उत्तर : 3. "India"
व्याख्या :
Answer: C) India Explanation: According to a Report by analyst firm Canalys, India has become the second largest smartphone market in the world.
प्र: प्यूगा घाटी निम्नलिखित में से किस स्थान पर स्थित है?
1884 060ac7163d752621d4f9b782c
60ac7163d752621d4f9b782c- 1जम्मू कश्मीरtrue
- 2हिमाचल प्रदेशfalse
- 3उत्तराखंडfalse
- 4केरलfalse
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उत्तर : 1. "जम्मू कश्मीर "
प्र: A Fuse is used in mains electric supply as a safety devices. Which one of the following statements about the fuse is correct? 1884 05b5cc7c2e4d2b41977750aed
5b5cc7c2e4d2b41977750aed- 1It is connected in parallel with the main switchfalse
- 2It is made mainly from silver alloysfalse
- 3It must have a low melting pointtrue
- 4It must have a very high resistancefalse
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उत्तर : 3. "It must have a low melting point"
व्याख्या :
Answer: C) It must have a low melting point Explanation:
प्र: 7 वें विश्व हिंदू आर्थिक मंच (WHEF) 2019 की मेजबानी किस शहर ने की?
1884 05d95ae6531f48d43df2534a5
5d95ae6531f48d43df2534a5- 1मुंबईtrue
- 2कोलकाताfalse
- 3नई दिल्लीfalse
- 4काठमांडूfalse
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उत्तर : 1. "मुंबई"
प्र: आदत किसे कहते हैं ?
1884 05f19211617ca6a2f066e1056
5f19211617ca6a2f066e1056- 1कोई कार्य की पुनावृत्तिtrue
- 2यह एक स्वतःfalse
- 3A एवं B दोनोंfalse
- 4इनमें से कोई नहींfalse
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