IIT JEE Practice Question and Answer
8Q: The First Indian city to get " Electric Radio Cabs " is ? 1388 05b5cc6dfe4d2b4197774eb11
5b5cc6dfe4d2b4197774eb11- 1Goafalse
- 2Delhifalse
- 3Hyderabadfalse
- 4Nagpurtrue
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Answer : 4. "Nagpur"
Explanation :
Answer: D) Nagpur Explanation: With India's pledge to go all electric by 2030, Nagpur will be the first city in the country to adopt electric cabs as the country moves a step closer to its goal. The pilot project will see around 200 e-cabs in Nagpur with the local body to provide for the charging stations across the city. Currently, Mahindra and Honda are few of the car-manufacturers who have electric and hybrid vehicles in their line-up. We do hope that the situation changes, as hybrid and electric vehicles will help in the growing pollution in India. Countries such as France, Netherland and Belgium have already started to adopt electric and hybrid vehicles.
Q: It was Tuesday on Jan 1, 2006. What was the day of the week Jan 1, 2010 ? 1387 05b5cc6d0e4d2b4197774e367
5b5cc6d0e4d2b4197774e367- 1Sundayfalse
- 2Fridaytrue
- 3Mondayfalse
- 4Tuesdayfalse
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Answer : 2. "Friday"
Explanation :
Answer: B) Friday Explanation: On 31st December, 2005 it was Monday. Number of odd days from the year 2006 to the year 2009 = (1 + 1 + 2 + 1) = 5 days. On 31st December 2009, it was Thursday. Thus, on 1st Jan, 2010 it is Friday.
Q: Guess the Missing number in the Number Challenge ? 1387 05b5cc6d1e4d2b4197774e3ed
5b5cc6d1e4d2b4197774e3ed- 18false
- 232false
- 344false
- 464true
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Answer : 4. "64"
Explanation :
Answer: D) 64 Explanation: The logic in the challenge is 81x6 = 9x6 = 54 144x7=84 Similarly, 64x8 = 8x8 = 64.
Q: I, J , K and L are all distinct individual. I is the daughter of J. J is the son of K and 'K' is the father of L. If B is the son of J and B has one brother, 'D'. Then which of the following statements is/ are true ? I. I is the sister of D. II. D and B are brother. III. K is the grand father of D. 1387 05b5cc6d9e4d2b4197774e867
5b5cc6d9e4d2b4197774e867- 1Only Ifalse
- 2I & IIfalse
- 3Only IIIfalse
- 4All of thesetrue
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Answer : 4. "All of these"
Explanation :
Answer: D) All of these Explanation: K | J -- L | I -- D -- B Here I is female J, K, L & D , B are males Then from the above conditions, All of the given statements are true.
Q: Now my value becomes ? 1386 05b5cc6d2e4d2b4197774e45c
5b5cc6d2e4d2b4197774e45c- 15false
- 210true
- 315false
- 412false
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Answer : 2. "10"
Explanation :
Answer: B) 10 Explanation: In the first figure, number of triangles are 5. In the second, the figure becomes double then the number of triangles also doubles. i.e, 10.
Q: What are the reactants in a chemical reaction? 1385 05b5cc666e4d2b4197774befd
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Answer :
Explanation :
In a chemical reaction, substances (elements or compounds) called reactants are changed into other substances (compounds or elements) called products. Hence, reactants are those which start the chemical reaction. For example: 1. In the burning of natural gas, methane (CH4) and oxygen (O2) are the reactants in the chemical reaction. are the substances formed by a chemical reaction. In the burning of natural gas, carbon dioxide (CO2) and water (H2O) are the products formed by the reaction. 2. H2+O2 ----> H2O Here H2 & O2 are called Reactants and H2O is called Product.
Q: Ozone is concentrated in the 1385 05b5cc6abe4d2b4197774d001
5b5cc6abe4d2b4197774d001- 1Stratospheretrue
- 2Tropospherefalse
- 3Ionospherefalse
- 4Mesospherefalse
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Answer : 1. "Stratosphere"
Explanation :
Answer: A) Stratosphere Explanation: Most of the ozone in the atmosphere is found in the layer of stratosphere, which begins about 10.16 kilometers (6.10 miles) above Earth's surface and extends up to about 50 kilometers (31 miles) altitude.
Q: What does one mole of H2O correspond to 1384 05b5cc69ce4d2b4197774c85a
5b5cc69ce4d2b4197774c85a- 116 gmsfalse
- 218 gmstrue
- 320 gmsfalse
- 422 gmsfalse
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Answer : 2. "18 gms"
Explanation :
Answer: B) 18 gms Explanation: The molar mass of H2O can be calculated as the following. M(H2O)= [2 x M(H)] + [M(O)]. And we know that M(H) = 1g/mol, M(O) = 16g/mol. So, M(H2O)= 2x1 + 16 = 18g/mol, That means 1 mole of H2O contains 18g. Hence, one mole of H2O corresponds to 18 grams.

