Practice Question and Answer
8 Q: Optic fibers are mainly used for which of the following?
2360 05ec375f18463ff0219fff162
5ec375f18463ff0219fff162- 1Communicationtrue
- 2Weavingfalse
- 3Musical instrumentsfalse
- 4Food industryfalse
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Answer : 1. "Communication"
Q: Which two atoms form an ionic bond? 2360 05b5cc604e4d2b4197774b4b7
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Answer :
Explanation :
Ionic bonding is a type of chemical bond in which valence electrons are lost from one atom and gained by another.. This bond generates two oppositely charged ions. In ionic bonds, the metal loses electrons to become a positively charged cation, whereas the nonmetal accepts those electrons to become a negatively charged anion. Example :: One example of an ionic bond is the formation of sodium fluoride, NaF, from a sodium atom and a fluorine atom. In this reaction, the sodium atom loses its single valence electron to the fluorine atom, which has just enough space to accept it. The ions produced are oppositely charged and are attracted to one another due to electrostatic forces.
Q: Nowadays there is a demand for expansion of membership of which part of the United Nations?
2360 05ef30ba0d40ebf3f782f825e
5ef30ba0d40ebf3f782f825e- 1Council of Justicefalse
- 2International Courtfalse
- 3Security Counciltrue
- 4General Assemblyfalse
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Answer : 3. "Security Council"
Q: Crack the code & Unlock the Key ? 2360 05b5cc6d2e4d2b4197774e42e
5b5cc6d2e4d2b4197774e42e- 1062false
- 2602false
- 3042true
- 4204false
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Answer : 3. "042"
Explanation :
Answer: C) 042 Explanation: From all the hints given, only 042 satisfies and it unlocks the key.
Q: Male literacy rate in India according to 2011 census is
2360 05dfca4da54723673b3fed4fd
5dfca4da54723673b3fed4fd- 145.96 %false
- 256.38 %false
- 382.14 %true
- 464.13 %false
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Answer : 3. "82.14 % "
Q: In the nitrogen cycle, soil nitrates are converted into free nitrogen by whom?
2360 05f6046ec80a26b7dab001452
5f6046ec80a26b7dab001452- 1nitrifying bacteriafalse
- 2denitrifying bacteriatrue
- 3ammonifying bacteriafalse
- 4None of thesefalse
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Answer : 2. "denitrifying bacteria"
Q: Kalyan purchased a Maruti van for Rs. 1,96,000 and the rate of depreciation is 14(2/7) % per annum. Find the value of the van after two years ? 2360 05b5cc701e4d2b4197774f170
5b5cc701e4d2b4197774f170- 1Rs. 1,24,000false
- 2Rs. 1,44,000true
- 3Rs. 1,32,000false
- 4Rs. 1,62,000false
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Answer : 2. "Rs. 1,44,000"
Explanation :
Answer: B) Rs. 1,44,000 Explanation: Value of Maruti Van, V1 = Rs. 1,96,000Rate of depreciation, r = 14(2/7)% = 100/7%; Time, t = 2 yearsLet V2 is the value after depreciation. V2 = V11 - r100tV2 = 196001 - 10071002 V2 = 196000(6/7)(6/7) V2 = (196000x36)/49 = Rs. 1,44,000.
Q: Directions : Find the missing number from the given responses in each of the following questions .
2360 16257c8df788437496064f3be
6257c8df788437496064f3be- 15false
- 215false
- 38true
- 456false
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