IIT JEE Practice Question and Answer
8Q: In a joint family, there are 24 members whose age is decreased by 4 months, when one girl aged 24 years is replaced by a new boy. Find the age of the new boy ? 1615 05b5cc6c5e4d2b4197774dd73
5b5cc6c5e4d2b4197774dd73- 118 yearsfalse
- 212 yearsfalse
- 315 yearsfalse
- 416 yearstrue
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Answer : 4. "16 years"
Explanation :
Answer: D) 16 years Explanation: Age of new boy = (Age of moved girl) – (Number of family members × Decreased in average) = 24 – 24×4/12 = 24 – 8 = 16 years.
Q: What does the APR on a credit card determine? 1615 05b5cc60de4d2b4197774b5e6
5b5cc60de4d2b4197774b5e6- 1fee paid by bank for depositsfalse
- 2fee paid for borrowing moneytrue
- 3Both A & Bfalse
- 4None of the abovefalse
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Answer : 2. "fee paid for borrowing money"
Explanation :
Answer: B) fee paid for borrowing money Explanation: A credit card's interest rate is the price you pay for borrowing money. For credit cards, the interest rates are typically stated as a yearly rate. This is called the annual percentage rate (APR). On most cards, you can avoid paying interest on purchases if you pay your balance in full each month by the due date. Your APR is expressed in terms of a year, but credit card companies use it to calculate charges over your monthly statement period.
Q: Which of the following chemical compounds has the highest boiling point? 1615 05b5cc6b5e4d2b4197774d52a
5b5cc6b5e4d2b4197774d52a- 1Dimethyl ether (CH3OCH3)false
- 2Methanol (CH3OH)true
- 3Methane (CH4)false
- 4Nonefalse
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Answer : 2. "Methanol (CH3OH)"
Explanation :
Answer: B) Methanol (CH3OH) Explanation: Chemical Compounds with stronger intermolecular forces have higher boiling points. The order of strengths of intermolecular forces is: London dispersion < dipole-dipole < H-bonding Methane (CH4) — London dispersion forces Dimethyl ether (CH3OCH3) — dipole-dipole attractions Methanol (CH3OH) — hydrogen bonding Therefore, Methanol - CH3OH with H-Bonding have highest Boiling Point among the given chemical compounds.
Q: Logic Challenge 1614 05b5cc6d5e4d2b4197774e62e
5b5cc6d5e4d2b4197774e62e- 140false
- 220false
- 32true
- 436false
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Answer : 3. "2"
Explanation :
Answer: C) 2 Explanation: In the starting it is given that Couple went to the movie and No other went with them. So total members went to movie is only 2.
Q: Why did settlers move to the great plains? 1614 05b5cc60ae4d2b4197774b5ba
5b5cc60ae4d2b4197774b5ba- 1There were minerals in the regionfalse
- 2Government was offering 160 acres of land for freefalse
- 3Land prices in the East were getting too expensivefalse
- 4All of the abovetrue
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Answer : 4. "All of the above"
Explanation :
Answer: D) All of the above Explanation: Land prices in the East were getting too expensive, and the West (Great Plains) offered an opportunity for more people to own land. Although the area suffered from extreme weather and poor soils, many people decided to take the risk and venture to the Great Plains. The government was also committed to supporting those who decided to make the move. Settlers moved to the Great Plains for several reasons. One reason was the government was offering 160 acres of land for free if the settler agreed to live on the land for five years. This was part of the Homestead Act of 1862. Some people went to the Great Plains when they heard there were minerals in the region. Gold was one mineral found in the Great Plains region. People hoped to make a lot of money by mining gold.
Q: What fields did progressives aim to reform? 1614 05b5cc615e4d2b4197774b6bf
5b5cc615e4d2b4197774b6bf- 1workplace conditionsfalse
- 2educationfalse
- 3governmentfalse
- 4All of the abovetrue
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Answer : 4. "All of the above"
Explanation :
Answer: D) All of the above Explanation:
Q: Which of the following is not an enzyme? 1614 05b5cc62ce4d2b4197774b907
5b5cc62ce4d2b4197774b907- 1Oxytocintrue
- 2Trypsinfalse
- 3Pepsinfalse
- 4Ptyalinfalse
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Answer : 1. "Oxytocin"
Explanation :
Answer: A) Oxytocin Explanation: Oxytocin is a mamallian hormone and also acts as neuro transmitter in the brain.
Q: Which one of the following is often called "Twitter of China" ? 1614 05b5cc6c1e4d2b4197774db91
5b5cc6c1e4d2b4197774db91- 1Youkufalse
- 2Sina weibotrue
- 3We chatfalse
- 4Nonefalse
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Answer : 2. "Sina weibo"
Explanation :
Answer: B) Sina weibo Explanation:

