Practice Question and Answer
8 Q: यदि $$ \ {xy\over x+y}= a, $$ $${xz\over x+z}=b $$ and $$ {yz\over y+z} =c $$ है, जहाँ a, b, c सभी अशून्य संख्याऐ है, तो x का मान किसके बराबर है ?
2234 05da8441eb247ec0cc95f4c77
5da8441eb247ec0cc95f4c77- 1$$ 2abc\over {ab+bc-ac} $$false
- 2$$ 2abc\over {ab+ac-ac} $$false
- 3$$ 2abc\over {ac+bc-ab} $$true
- 4$$ 2abc\over {ac+bc-ac} $$false
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Answer : 3. "$$ 2abc\over {ac+bc-ab} $$"
Q: एक व्यक्ति एक निचित दूरी तक पैदल चलकर जाने तथा गाड़ी द्वारा वापस आने में कुल 4 घंटा 30 मिनट का समय लेता है । यदि वह दोनों दिशाओं में समान चाल से गाड़ी से यात्रा करे तो कुल 3 घंटे का समय लगता है । बताएं अगर व्यक्ति दोनों दिशाओं में पैदल चले तो उसे कुल कितना समय लगेगा ।
2234 05f353cb54e31882c043ce0e4
5f353cb54e31882c043ce0e4- 15 घंटाfalse
- 26 घंटाtrue
- 34 घंटा 30 मिनटfalse
- 44 घंटा 45 मिनटfalse
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Answer : 2. "6 घंटा "
Q: किस राज्य ने 'योद्वावु' मोबाइल ऐप लॉन्च किया है?
2234 05e4ba555b1e50713d8439cc7
5e4ba555b1e50713d8439cc7- 1तमिलनाडुfalse
- 2कर्नाटकfalse
- 3केरलtrue
- 4आंध्र प्रदेशfalse
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Answer : 3. "केरल"
Q: Full convertibility of a rupee means ? 2234 05b5cc723e4d2b4197774f6a9
5b5cc723e4d2b4197774f6a9- 1Determination of rate of exchange between rupee and foreign currencies freely by the market forces of demand and supplytrue
- 2Repayment of loans in terms of rupeesfalse
- 3Payment for imports in terms of rupeesfalse
- 4Purchase of foreign exchange for rupees freelyfalse
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Answer : 1. "Determination of rate of exchange between rupee and foreign currencies freely by the market forces of demand and supply"
Explanation :
Answer: A) Determination of rate of exchange between rupee and foreign currencies freely by the market forces of demand and supply Explanation:
Q: Which of the following Indian Movie won best cinematography at 2019 Beijing International Film Festival? 2234 05cbff8cb43e4233c1d18dc6c
5cbff8cb43e4233c1d18dc6c- 1Sanjufalse
- 2Bhayanakamtrue
- 32.0false
- 4Badhaai Hofalse
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Answer : 2. "Bhayanakam"
Q: निम्नलिखित श्रृंखला में प्रश्न चिह्न (?) की जगह ले सकने वाली आकृति का चयन करें।
2234 05ffea2b5c967b15c38d9ed89
5ffea2b5c967b15c38d9ed89- 1true
- 2false
- 3false
- 4false
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Answer : 1. "
"
Q: Marketing refers to - 2233 05b5cc6bbe4d2b4197774d825
5b5cc6bbe4d2b4197774d825- 1Execution of salesfalse
- 2Planning sales campaignsfalse
- 3Advertising and promotionsfalse
- 4Philosophy that stresses customer value and satisfactiontrue
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Answer : 4. "Philosophy that stresses customer value and satisfaction"
Explanation :
Answer: D) Philosophy that stresses customer value and satisfaction Explanation:
Q: Two metallic plate of equal thickness and coefficient thermal conductivity K1 and K2 put together face to face. A common plate is constructed. What is equivalent K? 2233 05b5cc6bfe4d2b4197774d9e7
5b5cc6bfe4d2b4197774d9e7- 1K1k2/k1+k2false
- 22k1k2/k1+k2true
- 3K1+k2/k1k2false
- 4Nonefalse
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Answer : 2. "2k1k2/k1+k2"
Explanation :
Answer: B) 2k1k2/k1+k2 Explanation: We know that, The equivalent K = L1 + L2L1K1+L2K2 where L1 & L2 are plate1 & Plate2 thicknesses, K1 & K2 are coefficient thermal conductivity of plate1 & Plate2 respectively. But here L1 = L2 = L (say) Then K = L+L/(L/K1 + L/K2) = 2K1K2K1+K2