IIT JEE Practice Question and Answer
8Q: In how many different ways could couples be picked from 6 men and 9 women ? 1417 05b5cc728e4d2b4197774f728
5b5cc728e4d2b4197774f728- 126false
- 254true
- 352false
- 428false
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 2. "54"
Explanation :
Answer: B) 54 Explanation: Number of mens = 8 Number of womens = 5 Different ways could couples be picked = C16× 9C1 = 9 x 6 = 54 ways.
Q: The term 'fourth estate' is used in reference to 1416 05b5cc65ee4d2b4197774be07
5b5cc65ee4d2b4197774be07- 1The Executivefalse
- 2The Press and news papertrue
- 3Parliamentfalse
- 4The Judiciaryfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 2. "The Press and news paper"
Explanation :
Answer: B) The Press and news paper Explanation: Thomas Carlyle attributed the origin of the term to Edmund Burke, who used it in a parliamentary debate in 1787 on the opening up of press reporting of the House of Commons of Great Britain.
Q: If two dice are thrown together, the probability of getting an even number on one die and an odd number on the other is ? 1414 05b5cc6ebe4d2b4197774ee64
5b5cc6ebe4d2b4197774ee64- 11false
- 21/2true
- 30false
- 43/5false
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 2. "1/2"
Explanation :
Answer: B) 1/2 Explanation: The number of exhaustive outcomes is 36.Let E be the event of getting an even number on one die and an odd number on the other. Let the event of getting either both even or both odd then = 18/36 = 1/2P(E) = 1 - 1/2 = 1/2.
Q: IG full form in police department? 1414 05b5cc696e4d2b4197774c584
5b5cc696e4d2b4197774c584- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer :
Explanation :
IG stands for Inspector General of Police. DIG(Deputy Inspector General ofPolice) is a One-star rank in the police service who works under IG.
Q: Everyone has it and no one can lose it. What is it? 1412 05b5cc69fe4d2b4197774ca1e
5b5cc69fe4d2b4197774ca1e- 1Facefalse
- 2Teethfalse
- 3Hairfalse
- 4Shadowtrue
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 4. "Shadow"
Explanation :
Answer: D) Shadow Explanation:
Q: Which of the following is a false statement? 1409 05b5cc6a6e4d2b4197774cd1d
5b5cc6a6e4d2b4197774cd1d- 1As bond order increases the strength of the bond increasesfalse
- 2Bond order is proportional to the bond lengthtrue
- 3Molecules with negative bond order are highly unstablefalse
- 4Bond order is inversely proportional to the bond lengthfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 2. "Bond order is proportional to the bond length"
Explanation :
Answer: B) Bond order is proportional to the bond length Explanation: Bond order is proportional to the bond length is a False statement since Bond order is inversely proportional to the bond length.
Q: As per the decision of the GST Council, e-Way Bill system has been rolled out from 1408 05b5cc669e4d2b4197774bf3b
5b5cc669e4d2b4197774bf3b- 11st March 2018false
- 21st April 2018true
- 31st May 2018false
- 41st January 2018false
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 2. "1st April 2018"
Explanation :
Answer: B) 1st April 2018 Explanation: As per the decision of the GST Council, e-Way Bill system has been rolled out from 1st of April this year (2018).
Q: A can do a work in 9 days, B can do a work in 7 days, C can do a work in 5 days. A works on the first day, B works on the second day and C on the third day respectively that is they work on alternate days. When will they finish the work ? 1408 05b5cc73de4d2b4197774f94d
5b5cc73de4d2b4197774f94d- 1[7 + (215/345)] daysfalse
- 2[6 + (11/215)] daysfalse
- 3[6 + (261/315)] daystrue
- 4[5 + (112/351)] daysfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 3. "[6 + (261/315)] days"
Explanation :
Answer: C) [6 + (261/315)] days Explanation: After day 1, A finishes 1/9 of the work. After day 2, B finishes 1/7 more of the total work. (1/9) + (1/7) is finished. After day 3, C finishes 1/5 more of total work. Total finished is 143/315. So, after day 6, total work finished is 286/315. Now remaining work = 29 /315 On day 7, A will work again Work will be completed on day 7 when A is working. He must finish 29/315 of total remaining work. Since he takes 9 days to finish the total task, he will need 261/315 of the day. Total days required is 6 + (261/315) days.

