IIT JEE Practice Question and Answer
8Q: What is the freezing point of water in Celsius? 1810 05b5cc6a6e4d2b4197774cda1
5b5cc6a6e4d2b4197774cda1- 10 deg Ctrue
- 232 deg Cfalse
- 3-42 deg Cfalse
- 4-32 deg Cfalse
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Answer : 1. "0 deg C"
Explanation :
Answer: A) 0 deg C Explanation: The freezing point of water and melting point is 0 °C or 32 °F. The temperature may be lower if supercooling occurs.
Q: What can go up a chimney down, but cannot go down a chimney up? 1810 05b5cc645e4d2b4197774bba9
5b5cc645e4d2b4197774bba9- Show AnswerHide Answer
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Answer :
Explanation :
An Umbrella. Yes, when it is open it can't be fit under a chimney but when it is closed it can be fit down a chimney.
Q: What does the central nervous system consists of? 1810 05b5cc64ae4d2b4197774bc4c
5b5cc64ae4d2b4197774bc4c- 1Brainfalse
- 2Spinal cordfalse
- 3Nervesfalse
- 4All the abovetrue
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Answer : 4. "All the above"
Explanation :
Answer: D) All the above Explanation: The central nervous system CNS is responsible for integrating sensory information and responding accordingly. It consists of two main components:: 1. The brain 2. The spinal cord The brain is the center of our thoughts, the interpreter of our external environment, and the origin of control over body movement. The brain can be divided into four main lobes: temporal, parietal, occipital and frontal. The spinal cord serves as a conduit for signals between the brain and the rest of the body.
Q: Which unit of valuation is known as paper gold? 1809 05b5cc69be4d2b4197774c811
5b5cc69be4d2b4197774c811- 1SDRtrue
- 2Eurodollarfalse
- 3GDRfalse
- 4Petrodollarfalse
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Answer : 1. "SDR"
Explanation :
Answer: A) SDR Explanation: SDR means Special Drawing Rights. SDRs are a measure of a country's reserve assets with IMF and, whereas not 'money' in the strict sense, have several characteristics of money as interest-bearing assets, store of value, and means of settling indebtedness. International financing instrument created in 1970 by the International Monetary Fund (IMF) to coincide with the disfavor of the US dollar as the principal currency of the world trade. Also called paper gold, an SDR is neither paper nor gold but an accounting entry. It is not backed by any currency or precious metal and is used only among governments and IMF for balance Of payments settlements.
Q: A jeep travels a certain distance taking 6 hrs in forward journey, during the return journey increased speed 12km/hr takes the times 4 hrs. What is the distance travelled by the jeep is ? 1809 05b5cc754e4d2b4197774fb5d
5b5cc754e4d2b4197774fb5d- 1244 kmfalse
- 2144 kmtrue
- 3444 kmfalse
- 4344 kmfalse
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Answer : 2. "144 km"
Explanation :
Answer: B) 144 km Explanation: Given a jeep travels a certain distance taking 6 hrs in forward journeyDuring the return journey, it takes 4 hrs with an increased speed 12 km/hrLet 'x' be the distance.Now, speed is given by distance/time.Here the difference between both speeds = 12 x4 - x6 = 12 3x - 2x12 = 12 => x = 144 km Therefore, the distance travelled by the jeep in forward or return journey is x = 144 km.
Q: The total simple interest earned on a sum of money increases by Rs. 600 when the rate of interest increases by 2% per annum. If the investment was made for 5 years, find the sum of money that was invested ? 1809 05b5cc6cae4d2b4197774e03b
5b5cc6cae4d2b4197774e03b- 1Rs. 6000true
- 2Rs. 5550false
- 3Rs. 7500false
- 4Rs. 6580false
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Answer : 1. "Rs. 6000"
Explanation :
Answer: A) Rs. 6000 Explanation: Let the sum invested be Rs. P Let the rate of interest be R% per annum => Interest earned for 5 years = (P x 5 x R/100) = PR/20 Now, given that the interest earned increased by Rs. 600 if the Rate increased to (R+2)% => SI = (P x 5 x (R+2))/100 = PR/20 + 10P/100 Hence, PR/20 + 10P/100 = PR/20 + 600 => P = 6000 Therefore, the sum invested is Rs. 6000
Q: A Bus travels first half distance between two places with a speed of 40 kmph and the rest half distance with a speed of 60 kmph. The average speed of the Bus is ? 1809 05b5cc764e4d2b4197774fda3
5b5cc764e4d2b4197774fda3- 148 kmphtrue
- 250 kmphfalse
- 346 kmphfalse
- 442 kmphfalse
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Answer : 1. "48 kmph"
Explanation :
Answer: A) 48 kmph Explanation: we know that speed = distance traveled/time takenlet the total distance traveled by the car is 2x km.then time taken by it to cover first half is x/60 hour.and for second half is x/40 hour.Then average speed= total distance travelled / total time taken. i.e. 2xx60+x40 => 2x5x120 = 48 kmph.
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Answer :
Explanation :
24 S in an IF means 24 Spokes in an Indian Flag.

