IIT JEE Practice Question and Answer
8Q: Rifath Sharook has designed the world’s lightest satellite “KalamSat”. He hails from which country ? 932 05b5cc6dee4d2b4197774ea6f
5b5cc6dee4d2b4197774ea6f- 1Russiafalse
- 2Pakistanfalse
- 3Dubaifalse
- 4Indiatrue
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Answer : 4. "India"
Explanation :
Answer: D) India Explanation: Indian teen Rifath Sharook from Tamil Nadu has designed the world’s lightest & smallest satellite named “KalamSat”. The satellite weighs only 64 grams and will be launched by NASA on June 21, 2017. With this, he will become the first Indian student to have his experiment launched by NASA. The main role of the satellite will be to demonstrate the performance of 3-D printed carbon fibre. The satellite has been designed in a way which will have a 240-minute mission in space and will operate for 12 minutes in a micro-gravity environment of space.
Q: How can we get 24 as an answer by using 6, 11, 3 and 9? 932 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 part of the atom has a positive charge? 932 05b5cc694e4d2b4197774c4c6
5b5cc694e4d2b4197774c4c6- 1Neutronfalse
- 2Protontrue
- 3Electronfalse
- 4All the abovefalse
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Answer : 2. "Proton"
Explanation :
Answer: B) Proton Explanation: Protons carry a positive electrical charge, electrons carry a negative electrical charge and neutrons carry no electrical charge at all. The protons and neutrons cluster together in the central part of the atom, called the nucleus, and the electrons 'orbit' the nucleus.
Q: 54, 60 LCM is 930 05b5cc6bce4d2b4197774d891
5b5cc6bce4d2b4197774d891- 1600false
- 2540true
- 360false
- 454false
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Answer : 2. "540"
Explanation :
Answer: B) 540 Explanation: Here the LCM of 54, 60 is => 2 x 3 x 3 x 3 x 10 = 6 x 9 x 10 = 54 x 10 = 540.
Q: The term 'fourth estate' is used in reference to 930 05b5cc65ee4d2b4197774be07
5b5cc65ee4d2b4197774be07- 1The Executivefalse
- 2The Press and news papertrue
- 3Parliamentfalse
- 4The Judiciaryfalse
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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: Solve the Logical Puzzle ? 928 05b5cc6c2e4d2b4197774dbb9
5b5cc6c2e4d2b4197774dbb9- 12false
- 24true
- 38false
- 40false
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Answer : 2. "4"
Explanation :
Answer: B) 4 Explanation:
Q: What has 4 Eyes But cannot see? 927 05b5cc6aee4d2b4197774d15d
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Answer :
Explanation :
What has 4 Eyes But cannot see is Mississippi. The wording of Mississippi has 4 'i''s. But it can't see.
Q: O and O' are the center of the two circles with radii 7cm and 9cm respectively. The distance between the centers is 20cm. If PQ be the transverse common tangent to the circles, which cuts OO' at X, what is the length of O'X in cm ? 926 05b5cc701e4d2b4197774f1a8
5b5cc701e4d2b4197774f1a8- 110false
- 26false
- 335/4false
- 445/4true
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Answer : 4. "45/4"
Explanation :
Answer: D) 45/4 Explanation: As clear from the figure itself, triangle OQX and triangle O'PX are similar. So, OQ/O'P = OX/O'X => OX = (7/9)xO'X And since, OX + O'X = 20 => (7/9)xO'X + O'X = 20 => O'X = 45/4