IIT JEE Practice Question and Answer
8Q: If 1 1 1 1 = R 2 2 2 2 = T 3 3 3 3 = E 4 4 4 4 = N Then 5 5 5 5 = ? 1274 05b5cc699e4d2b4197774c72e
5b5cc699e4d2b4197774c72e- 1Ytrue
- 2Zfalse
- 3Tfalse
- 4Xfalse
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Answer : 1. "Y"
Explanation :
Answer: A) Y Explanation: If you add all the terms of the LHS of equality, then the last letter of the sum written in words would give you the RHS. 1 + 1 + 1 + 1 = 4 = FOUR 2 + 2 + 2 + 2 = 8 = EIGHT 3 + 3 + 3 + 3 = 12 = TWELVE 4 + 4 + 4 + 4 = 16 = SIXTEEN So, following the same pattern. 5 + 5 + 5 + 5 = 20 = TWENTY That gives us our answer to 5 5 5 5 = "Y".
Q: How long would it take to travel 4 light years? 1273 05b5cc6ade4d2b4197774d124
5b5cc6ade4d2b4197774d124- Show AnswerHide Answer
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Answer :
Explanation :
There are approximately 6 trillion miles in a light-year, so the distance we need to go is 6 trillion miles / light-year times. 4 light-years is equal to 24 trillion miles. So, this whole would take 1.2 billion hours. There are 24 hours a day and 365.25 days per year, so this time in years is 137 thousand years.
Q: Nipah virus outbreak in Bangladesh in the year 1272 05b5cc670e4d2b4197774c02a
5b5cc670e4d2b4197774c02a- 12001true
- 22006false
- 32012false
- 42015false
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Answer : 1. "2001"
Explanation :
Answer: A) 2001 Explanation: The first identification of Nipah virus as a cause of an outbreak of encephalitis was reported in 2001 in Meherpur district of Bangladesh. Since, then Outbreaks of the deadly Nipah virus has been recorded almost every year in selected districts of Bangladesh. Drinking raw date palm sap and contact with a case were identified as the major risk factors for acquiring the disease.
Q: In How many ways can the letters of the word 'CAPITAL' be arranged in such a way that all the vowels always come together? 1272 05b5cc7b4e4d2b41977750897
5b5cc7b4e4d2b41977750897- 1360true
- 2720false
- 3120false
- 4840false
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Answer : 1. "360"
Explanation :
Answer: A) 360 Explanation: CAPITAL = 7 Vowels = 3 (A, I, A) Consonants = (C, P, T, L) 5 letters which can be arranged in 5P5=5! Vowels A,I = 3!2! No.of arrangements = 5! x 3!2!=360
Q: 3/4 divided by 2 is 1271 05b5cc666e4d2b4197774bed0
5b5cc666e4d2b4197774bed0- 13/2false
- 22/3false
- 38/3false
- 43/8true
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Answer : 4. "3/8"
Explanation :
Answer: D) 3/8 Explanation: 3/4 divided by 2 = 3/4/2 = 3/4x2 = 3/8. Hence, 3/4 divided by 2 is equal to 3/8.
Q: What are the Multiples of 18? 1271 05b5cc6b8e4d2b4197774d648
5b5cc6b8e4d2b4197774d648- 1144false
- 272false
- 3306false
- 4All the abovetrue
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Answer : 4. "All the above"
Explanation :
Answer: D) All the above Explanation: The Multiples of 18 are 18, 36, 54, 72, 90, 108, 126, .... Multiples of 18 are nothing but numbers which are divisible by 18 leaving remainder 0. An infinite number of multiples of 18 can be achieved by adding 18 to each subsequent multiple.
Q: Intermolecular forces in HCl are 1271 05b5cc658e4d2b4197774bd9e
5b5cc658e4d2b4197774bd9e- 1Hydrogen bondingfalse
- 2Dipole-dipolefalse
- 3Dispersion forcefalse
- 4All the abovetrue
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Answer : 4. "All the above"
Explanation :
Answer: D) All the above Explanation: Intermolecular forces : The forces of attraction present in between the molecules or atoms or compounds is termed as intermolecular forces. The molecule HCl is composed of hydrogen and chlorine atom. There is high difference in electronegativities therefore, it is polar in nature. The H end of HCl is permanently slightly positive charge. The Cl end of HCl has a permanent slight negative charge. the "H" in one molecule is attracted to the "Cl" in a neighbor. The intermolecular force is weak compared to a covalent bond. But this dipole-dipole interaction is one of the stronger intermolecular attractions. It also has hydrogen bonding and dispersion forces. Dispersion forces are the weakest forces which are present in between all molecules or atoms.Hydrogen bonds are present in molecules having at least one H-A bond where A is the strong electronegative atom (mainly F, Cl and N).
Q: The price of 2 oranges, 3 bananas and 4 apples is Rs. 15. The price of 3 oranges, 2 bananas and 1 apple is Rs. 10. What will be price of 4 oranges, 4 bananas and 4 apples ? 1270 05b5cc6c9e4d2b4197774df5a
5b5cc6c9e4d2b4197774df5a- 1Rs. 10false
- 2Rs. 15false
- 3Rs. 20true
- 4Rs. 25false
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Answer : 3. "Rs. 20"
Explanation :
Answer: C) Rs. 20 Explanation: Let the Oranges be 'O', Bananas be 'B' and Apples be 'A' From the given data, 2O + 3B + 4A = 15 ...... (I) 3O + 2B + A = 10 ..... (II) On adding (I) and (II), 5O + 5B + 5A = 25 O + B + A = 5 4O + 4B + 4A = 20.

