IIT JEE Practice Question and Answer
8Q: In an objective competitive exam, a correct answer score 4 marks and on a wrong answer 2 marks are negatively added. A student scores 420 marks from 150 question. How many answers were correct ? 4585 05b5cc74fe4d2b4197774fb4e
5b5cc74fe4d2b4197774fb4e- 1145false
- 2138false
- 3125false
- 4120true
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 4. "120"
Explanation :
Answer: D) 120 Explanation: let x be the correct answer and y be the wrong answerso the total number of questions is (x + y) = 150.....(1)=> 4x - 2y = 420.....(2)By solving (1) & (2), we get => 6x = 720hence x = 120Therefore, number of correct answers are 120.
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer :
Explanation :
Answer 1) True Answer 2) Cannot tell Answer 3) True
Q: Which of the Phrases(1), (2), (3) and (4) given below each sentence should replace the phrases printed in bold in the sentence to make it grammatically correct. The ban is applied by the district’s commercial taxes department after protests by a community, which had threat to burn theatres screening the controversial movie. 4582 05b5cc6c5e4d2b4197774dd5a
5b5cc6c5e4d2b4197774dd5a- 1had threated to burnfalse
- 2had threatened to burntrue
- 3had threatened to burningfalse
- 4had threats of burningfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 2. "had threatened to burn"
Explanation :
Answer: B) had threatened to burn Explanation:
Q: There are three rooms in a Hotel: one single, one double and one for four persons. How many ways are there to house seven persons in these rooms ? 4582 05b5cc754e4d2b4197774fbaf
5b5cc754e4d2b4197774fbaf- 1105true
- 27! x 6!false
- 37!/5!false
- 4420false
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "105"
Explanation :
Answer: A) 105 Explanation: Choose 1 person for the single room & from the remaining choose 2 for the double room & from the remaining choose 4 people for the four person room, Then, 7C1 x 6C2 x 4C4 = 7 x 15 x 1 = 105
Q: Smallest Taluk in Kerala State? 4564 05b5cc6afe4d2b4197774d24a
5b5cc6afe4d2b4197774d24a- 1Kunnathurtrue
- 2Eranadfalse
- 3Palakkadfalse
- 4Alappuzhafalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "Kunnathur"
Explanation :
Answer: A) Kunnathur Explanation: Kunnathur is the Smallest Taluk in Kerala State. Taluk : In Kerala, the administrative divisions below the district are called Taluk. There are 77 Taluks in Kerala State. Eranad is the Largest Taluk in Kerala State. Palakkad is the Largest District in Kerala State. Alappuzha is the Smallest District in Kerala State.
Q: Vinod have 20 rupees. He bought 1, 2, 5 rupee stamps. They are different in numbers by the reason of no change, the shop keeper gives 3 one rupee stamps. So how many stamps Vinod have ? 4552 05b5cc73de4d2b4197774f91b
5b5cc73de4d2b4197774f91b- 110true
- 218false
- 312false
- 415false
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "10"
Explanation :
Answer: A) 10 Explanation: Given total rupees = 20 RsNo. of one rupee stamps = 3Now, remaining money = Rs. 17With that he buys only 2 and 5 rupee stampsLet number of Rs. 5 stamps = KLet number of Rs. 2 stamps = L5K + 2L = 17K = 3, L = 1 (possible)L = 6, K = 1 (possible)=> But given that they are different in number so, K is not equal to 3one rupee stamps = 32 two stamps = 65 rupee stamps = 1Total number of stamps = 10.
Q: Ezra cup is associated with which sports? 4547 05b5cc651e4d2b4197774bcd0
5b5cc651e4d2b4197774bcd0- 1Hockeyfalse
- 2Polotrue
- 3Rowingfalse
- 4Footballfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 2. "Polo"
Explanation :
Answer: B) Polo Explanation: The Ezra Cup is a popular polo tournament conducted annually in India. The Calcutta Polo Club runs this oldest and first ever Polo Trophy. The first Ezra Cup was held in 1880. After a period of inactivity, it has now been revived by Mr. Keshav Bangur, Calcutta Polo Club's president.
Q: Which of these is not a simple machine? 4542 15b5cc607e4d2b4197774b55e
5b5cc607e4d2b4197774b55e- 1a pair of scissorstrue
- 2a leverfalse
- 3a rampfalse
- 4the pulleyfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "a pair of scissors"
Explanation :
Answer: A) a pair of scissors Explanation: Any of the basic mechanical devices for applying a force are called simple machines. There are 6 basic simple machines; the lever, the wheel and axle, the inclined plane, the wedge, the pulley, and the screw. Several of these simple machines are related to each other. But, each has a specific purpose in the world of doing work.