IIT JEE Practice Question and Answer
8Q: How can we get 24 as an answer by using 6, 11, 3 and 9? 1174 05b5cc6a9e4d2b4197774cf1e
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Answer :
Explanation :
This can be solved in two ways using only 6, 11, 9 and 3 we must get 24. 1. {[(11–6) x 3] + 9} By solving this we get 5 x 3 + 9 = 15 + 9 = 24. 2. [(9–6) x (11–3)] = 3 x 8 = 24.
Q: What is the first step in Photosynthesis? 1892 15b5cc6a9e4d2b4197774cf0f
5b5cc6a9e4d2b4197774cf0f- 1Formation of ATPfalse
- 2Joining of 3-carbon atom to form glucosefalse
- 3Ionization of waterfalse
- 4Excitement of an electron of chlorophyll photon of lighttrue
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Answer : 4. "Excitement of an electron of chlorophyll photon of light"
Explanation :
Answer: D) Excitement of an electron of chlorophyll photon of light Explanation: The first step in Photosynthesis is Excitement of an electron of chlorophyll photon of light.
Q: Li3PO4 compound name? 2569 05b5cc6a9e4d2b4197774cf14
5b5cc6a9e4d2b4197774cf14- 1Lithium perchloratefalse
- 2Lithium phyritefalse
- 3Lithium phosphatetrue
- 4Nonefalse
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Answer : 3. "Lithium phosphate"
Explanation :
Answer: C) Lithium phosphate Explanation: The given compund Li3PO4 name is Lithium phosphate. Lithium phosphate is a white crystal at room temperature. It is slightly soluble in water. It can be used to produce glass, disk, colorful phosphor powder. It can also be used as a catalyst in some reactions.
Q: What are the building blocks of Nucleic Acids? 1580 05b5cc6a9e4d2b4197774cf0a
5b5cc6a9e4d2b4197774cf0a- 1Pentose Sugarfalse
- 2DNAfalse
- 3RNAfalse
- 4Nucleotidestrue
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Answer : 4. "Nucleotides"
Explanation :
Answer: D) Nucleotides Explanation: The building blocks of the nucleic acids are "Nucleotides". Each nucleotide are composed of three parts. They are :: 1.Pentose sugar 2.Nitrogenous bases 3.Phosphoric acid.
Q: Which is the best definition of Federalism? 1968 05b5cc6a9e4d2b4197774cf00
5b5cc6a9e4d2b4197774cf00- 1Federalism encourages the practice of direct democracy at the state level rather than the national level.false
- 2The quality of federal supremacy in government.false
- 3A happy combination of mixed government.false
- 4Federalism enables the state and the national government to share power.true
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Answer : 4. "Federalism enables the state and the national government to share power."
Explanation :
Answer: D) Federalism enables the state and the national government to share power. Explanation: Federalism :: Federalism is a system based upon democratic rules and institutions in which the power to govern is shared between national and provincial/state governments, creating what is often called a federation. Federalism is a political concept in which a group of members are bound together with a governing representative head. Federalism enables the state and the national government to share power.
Q: Library is to Book as Book is to 3986 05b5cc6a9e4d2b4197774cf05
5b5cc6a9e4d2b4197774cf05- 1Wordsfalse
- 2Pagestrue
- 3Bindingfalse
- 4Coverfalse
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Answer : 2. "Pages"
Explanation :
Answer: B) Pages Explanation: A Library consists of Books in the same way Book consists Pages. Hence, Library : Book :: Book : Pages.
Q: A bag contains 3 red balls, 5 yellow balls and 7 pink balls. If one ball is drawn at random from the bag, what is the probability that it is either pink or red? 1700 05b5cc6a9e4d2b4197774cef6
5b5cc6a9e4d2b4197774cef6- 12/3true
- 21/8false
- 33/8false
- 43/4false
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Answer : 1. "2/3"
Explanation :
Answer: A) 2/3 Explanation: Given number of balls = 3 + 5 + 7 = 15 One ball is drawn randomly = 15C1 probability that it is either pink or red = 7C1 + 3C115C1 = 7 + 315 = 1015 = 23
Q: Which action is safe for a pwc? 9999 05b5cc6a9e4d2b4197774cefb
5b5cc6a9e4d2b4197774cefb- 1towing a skier behind a pwc rated for 3 people with two persons on boardfalse
- 2shutting off the engine before cleaning debris from the pump intakefalse
- 3seating a child to small to hold on the operator in front of the operatortrue
- 4All the abovefalse
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Answer : 3. "seating a child to small to hold on the operator in front of the operator"
Explanation :
Answer: C) seating a child to small to hold on the operator in front of the operator Explanation: Two passengers behind the operator is safe for a PWC.

