प्रश्न और उत्तर का अभ्यास करें
8 प्र: यदि किसी वस्तु का वेग दोगुना कर दिया जाता है, तो उसकी गतिज ऊर्जा _______
2238 05dc22f856d7b0b6e7450e86e
5dc22f856d7b0b6e7450e86e- 1दो गुनी हो जाती हैfalse
- 2आधी हो जाती हैfalse
- 3नहीं बदलतीfalse
- 4चार गुणा हो जाती हैtrue
- उत्तर देखेंउत्तर छिपाएं
- Workspace
- SingleChoice
उत्तर : 4. "चार गुणा हो जाती है"
प्र: एक वस्तु का क्रय मूल्य 800 रु है। 10 % छूट देने पर 12.5 % लाभ होता है, तो वस्तु का अंकित मूल्य ज्ञात करें।
2238 05dd631307780ee35515af307
5dd631307780ee35515af307- 1Rs. 1,000true
- 2Rs.1,100false
- 3Rs. 1,200false
- 4Rs. 1,300false
- उत्तर देखेंउत्तर छिपाएं
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उत्तर : 1. "Rs. 1,000 "
प्र: यदिx = 2 है तो का $$ x^3 + 27x^2 + 243x + 631$$ मान है।
2237 05ed62576ebc5ce408e2a9643
5ed62576ebc5ce408e2a9643- 11211false
- 21231false
- 31233true
- 41321false
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उत्तर : 3. "1233"
प्र:Directions: In question four alternatives are given for the Idiom/Phrase underlined in the sentences. Choose the alternative which best expresses the meaning of the Idiom/Phrase and mark it is the Answer Sheet.
We visit the shopping mall off and on.
2237 05f1682588cf3201b6326c54d
5f1682588cf3201b6326c54d- 1oftentrue
- 2up and aboutfalse
- 3really and trulyfalse
- 4once upon a timefalse
- उत्तर देखेंउत्तर छिपाएं
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उत्तर : 1. "often"
प्र: The population of a city is 415600.It increased by 25% in the first year and decreased by 30% in the second year.What is the population of the city at the end of second year? 2237 05b5cc783e4d2b41977750224
5b5cc783e4d2b41977750224- उत्तर देखेंउत्तर छिपाएं
- Workspace
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उत्तर :
व्याख्या :
As per given data, P = 415600, R1= 25% incresed, R2 = 30% decreased Population of the city at the end of the second year= 363650.
प्र: रीता ने अंकित मूल्य पर 20 % की छूट प्राप्त करते हुए एक टेलिविजन को 16,800 में बेचकर 800 रु लाभ कमाया, तो टेलिविजन का अंकित मूल्य ज्ञात करें ।
2237 05f22356cec5b045afeb353b7
5f22356cec5b045afeb353b7- 1Rs.20,800false
- 2Rs.24,000false
- 3Rs.18,000false
- 4Rs.20,000true
- उत्तर देखेंउत्तर छिपाएं
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उत्तर : 4. "Rs.20,000 "
प्र:In these questions read each sentence to find out whether there is any error in it. If there is no error, the answer is (D).
I do love the apartment, but that’s (A)/ besides the mark because I don’t have enough (B)/money for a security deposit right now.(C)/ No Error (D)
2237 060c884b7e12dfd4e6c4e9923
60c884b7e12dfd4e6c4e9923- 1(a)false
- 2(b)true
- 3(c)false
- 4(d)false
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उत्तर : 2. "(b)"
प्र: Is Nitrogen an Inert gas? 2237 05b5cc6a7e4d2b4197774ce45
5b5cc6a7e4d2b4197774ce45- 1TRUEfalse
- 2FALSEtrue
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उत्तर : 2. "FALSE"
व्याख्या :
Answer: B) FALSE Explanation: Nitrogen is found as a diatomic molecule (N2) in nature. There is a triple bond between the two nitrogen atoms. The triple bond is pretty strong. Therefore, it needs a lot of energy to break those bonds and participate in a reaction. So nitrogen is commonly referred to as and used as an inert gas (high abundance & low cost.) However, it’s not truly inert like most noble gases. Nitrogen does react if the conditions are met. But those conditions are not exactly mild, but are not as extreme as for noble gases. It forms nitric oxide and nitrogen dioxide with oxygen, ammonia with hydrogen, and nitrogen sulfide with sulfur.