IIT JEE Practice Question and Answer
8Q: A woman fills a bucket in 6 minutes. 1845 buckets have to be filled from 8 am. to 9:30 am. How many woman employees should be employed for this task? 1618 05b5cc6b5e4d2b4197774d543
5b5cc6b5e4d2b4197774d543- 1111false
- 2117false
- 3123true
- 4139false
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 3. "123"
Explanation :
Answer: C) 123 Explanation: We know that, M1 × D1W1 = M2 × D2W2 Here M1 = 1, D1 = 6 min, W1 = 1 and M2 = M, D2 = 90 min, W2 = 1845 1 × 61 = M × 901845 => M = 123
Q: What time will it be in 45 minutes? Now, if the time is 4:48 pm. 1617 05b5cc669e4d2b4197774bf81
5b5cc669e4d2b4197774bf81- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer :
Explanation :
As now, the time 4 : 48 pm after 45 min it will be 4:48 + 45 min = (4 hrs : 48 + 12 min) pm + 33 min = 5 hrs : 33 min pm. Hence, it is 5:33 pm.
Q: An owner of a Dry fruits shop sold small packets of mixed nuts for Rs. 150 each and large packets for Rs. 250 each. One day he sold 5000 packets, for a total of Rs. 10.50 lakh. How many small packets were sold ? 1617 05b5cc6cfe4d2b4197774e308
5b5cc6cfe4d2b4197774e308- 12000true
- 23000false
- 32500false
- 43500false
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "2000"
Explanation :
Answer: A) 2000 Explanation: Let 's' be the number of small packets and 'b' the number of large packets sold on that day. Therefore, s + b = 5000 ... eqn (1) Each small packet was sold for Rs.150.Therefore, 's' small packets would have fetched Rs.150s. Each large packets was sold for Rs.250.Therefore, 'b' large packets would have fetched Rs.250b. Total value of sale = 150s + 250b = Rs. 10.5 Lakhs (Given) Or 150s + 250b = 10,50,000 ... eqn (2) Multiplying equation (1) by 150, we get 150s + 150b = 7,50,000 ... eqn (3) Subtracting eqn (3) from eqn (2), we get 100b = 3,00,000Or b = 3000 We know that s + b = 5000So, s = 5000 - b = 5000 - 3000 = 2000. 2000 small packets were sold.
Q: It was Tuesday on Jan 1, 2006. What was the day of the week Jan 1, 2010 ? 1617 05b5cc6d0e4d2b4197774e367
5b5cc6d0e4d2b4197774e367- 1Sundayfalse
- 2Fridaytrue
- 3Mondayfalse
- 4Tuesdayfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
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: Avinash gave a sum of 5400 at the simple rate of interest of 8% to Rajeev for 4 years and Rajeev gave this amount to Chanukya at the rate of 6% for 4 years. Find how much extra amount has to be paid by Rajeev to Avinash after 4 years? 1617 05b5cc698e4d2b4197774c618
5b5cc698e4d2b4197774c618- 1Rs. 364false
- 2Rs. 432true
- 3Rs. 498false
- 4Rs. 554false
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 2. "Rs. 432"
Explanation :
Answer: B) Rs. 432 Explanation: Here Avinash gave to Rajeev and Rajeev gave the same to Chanukya Principal amount and Time is same but the only difference is Rate of interest. Rajeev took @ 8% and gave it to Chanukya @ 6% Here the difference in interest rate = 2% 2% of 5400 should be the extra amount paid by Rajeev to Avinash Required amount = 2 x 5400 x 4100 = 432 Hence, Rs. 432 is the extra amount has to be paid by Rajeev to Avinash after 4 years.
Q: Consider the following statements P : Suman is brilliantQ : Suman is richR : Suman is honest The negation of the statement "Suman is brilliant and dishonest if and only if Suman is rich" can be expressed as 1) P∧~R↔Q 2) ~P∧R↔Q 3) Q↔P∧~R 4) ~Q↔P∧~R 1617 05b5cc71ee4d2b4197774f5d6
5b5cc71ee4d2b4197774f5d6- 11false
- 22false
- 33false
- 44true
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 4. "4"
Explanation :
Answer: D) 4 Explanation: Suman is brilliant and dishonest is P ∧~ RSuman is brilliant and dishonest iff suman is rich isQ ↔ (P ∧ ~ R) Negative of statement is expressed as~ (Q ↔(P ∧ ~ R)).
Q: 'Brothers and sisters, I have none. But that man's father is my father's son'.How I and that man are related respectively? 1615 05b5cc6a3e4d2b4197774cc10
5b5cc6a3e4d2b4197774cc10- 1Father & Sontrue
- 2Brothersfalse
- 3Son & Fatherfalse
- 4Nephewsfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "Father & Son"
Explanation :
Answer: A) Father & Son Explanation: Given that man's father is my father's son => Me because i have no brothers => Mans father is me. Hence, that man is my Son.
Q: The basic unit of the nervous system is the 1615 05b5cc6a6e4d2b4197774cdbb
5b5cc6a6e4d2b4197774cdbb- 1Lymphsfalse
- 2Nephronsfalse
- 3Nervesfalse
- 4Neuronstrue
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 4. "Neurons"
Explanation :
Answer: D) Neurons Explanation: The basic unit of the nervous system is the Neurons. The neuron is a single nerve cell, and you have billions of them. There are three basic types of neurons:: 1. Association, 2. Afferent and 3. Efferent. The association neurons comprise the central nervous system (CNS) that is the brain and spinal cord. The afferent neurons are also known as the sensory neurons, they bring the stimuli from the sensors (e.g., skin, eyes, ears) to the CNS. The efferent neurons are also known as motor neurons, they bring the responses from the brain to the muscles and the glands.

