IIT JEE Practice Question and Answer
8Q: Which of the following statements best describes nutrient density? 2979 05b5cc6b3e4d2b4197774d45e
5b5cc6b3e4d2b4197774d45e- 1Consume a variety of foods from MyPyramid's ±ve major food groups every day.false
- 2Consume foods that have the most nutrition for their kcaloriestrue
- 3Choose a number of diFerent foods within any given food group rather than the same old thing.false
- 4All the abovefalse
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Answer : 2. "Consume foods that have the most nutrition for their kcalories"
Explanation :
Answer: B) Consume foods that have the most nutrition for their kcalories Explanation: Consume foods that have the most nutrition for their kcalories describes the Nutrient Density.
Q: How long have i been alive? 2979 05b5cc6a5e4d2b4197774ccaf
5b5cc6a5e4d2b4197774ccaf- Show AnswerHide Answer
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Answer :
Explanation :
This is a different way of asking your age. It can be how long you have been living in days weeks months and years since your birth date.
Q: Jagan went to another town covering 240 km by car moving at 60 kmph. Then he covered 400km by train moving at 100 kmph and then rest 200 km he covered by a bus moving at 50 kmph. The average speed during the whole journey was ? 2978 05b5cc705e4d2b4197774f244
5b5cc705e4d2b4197774f244- 136 kmphfalse
- 235 kmphfalse
- 372 kmphfalse
- 470 kmphtrue
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Answer : 4. "70 kmph"
Explanation :
Answer: D) 70 kmph Explanation: By car 240 km at 60 kmphTime taken = 240/60 = 4 hr. By train 240 km at 60 kmphTime taken = 400/100 = 4 hr. By bus 240 km at 60 kmphTime taken = 200/50 = 4 hr. So total time = 4 + 4 + 4 = 12 hr. and total speed = 240+400+200 = 840 kmAverage speed of the whole journey = 840/12 = 70 kmph.
Q: Statement: There has been a significant drop in the water level of all the lakes supplying water to the city.Courses of action:I. The water supply authority should impose a partial cut in supply to tackle the situation.II. The government should appeal to all the residents though mass media for minimal use of water. 2967 05b5cc736e4d2b4197774f85b
5b5cc736e4d2b4197774f85b- 1Only I followsfalse
- 2Only II followsfalse
- 3Both I & II followstrue
- 4Neither I nor II followsfalse
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Answer : 3. "Both I & II follows"
Explanation :
Answer: C) Both I & II follows Explanation: The situation can be tackled by periodic cuts in supply, and urging people to conserve water. So both the courses follow.
Q: Which elements are malleable and good conductors of electricity? 2965 05b5cc619e4d2b4197774b714
5b5cc619e4d2b4197774b714- 1tin and silvertrue
- 2iodine and silverfalse
- 3tin and xenonfalse
- 4iodine and xenonfalse
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Answer : 1. "tin and silver"
Explanation :
Answer: A) tin and silver Explanation: Tin and Silver are malleable and good conductors of electricity. The other combinations have a non metal in them which are bad conductors.
Q: What is the defining right of a representative democracy? 2964 05b5cc63de4d2b4197774bb1a
5b5cc63de4d2b4197774bb1a- 1the right to votetrue
- 2the right to freedom of speechfalse
- 3the right to petition the governmentfalse
- 4the right to freedom of religionfalse
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Answer : 1. "the right to vote"
Explanation :
Answer: A) the right to vote Explanation: The defining right of a representative democracy is the ability to vote for representatives to make decisions on their behalf. In democratic government, elections are held regularly, in which voters vote for someone who will serve in the levels of local, state, and federal government.
Q: P alone can complete a piece of work in 6 days. Work done by Q alone in one day is equal to one-third of the work done by P alone in one day. In how many days can the work be completed if P and Q work together ? 2964 05b5cc6d8e4d2b4197774e737
5b5cc6d8e4d2b4197774e737- 15 (2/3)false
- 26 (3/4 )false
- 34 (1/2)true
- 43false
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Answer : 3. "4 (1/2)"
Explanation :
Answer: C) 4 (1/2) Explanation: Work done by P alone in one day = 1/6th of the total work done by Q alone in one day = 1/3(of that done by P in one day) = 1/3(1/6 of the total) = 1/18 of the total. Work done by P and Q, working together in one day = 1/6 + 1/18 = 4/18 = 2/9 They would take 9/2 days = 4 (1/2) days to complete the work working together.
Q: ______ : trail :: grain : grail 2961 05b5cc6dbe4d2b4197774e90e
5b5cc6dbe4d2b4197774e90e- 1pathfalse
- 2holyfalse
- 3traintrue
- 4wheatfalse
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Answer : 3. "train"
Explanation :
Answer: C) train Explanation: Train becomes trail when the "n" is replaced by an "l", and grain becomes grail when the "n" is replaced by an "l".