IIT JEE Practice Question and Answer
8Q: A mixture of 70 litres of Fruit Juice and water contains 10% water. How many litres of water should be added to the mixture so that the mixture contains 12.5% water ? 2858 05b5cc6dfe4d2b4197774eb1b
5b5cc6dfe4d2b4197774eb1b- 12 littrue
- 24 litfalse
- 31 litfalse
- 43 litfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "2 lit"
Explanation :
Answer: A) 2 lit Explanation: Quantity of fruit juice in the mixture = 70 - [70 x (10/100) ]= 63 litres. After adding water, juice would form 87.5% of the mixture. Hence, if quantity of mixture after adding x liters of water, [(87.5) /100 ]*x = 63 => x = 72 Hence 72 - 70 = 2 litres of water must be added.
Q: Which of the following describes the Urban League? 2850 05b5cc68be4d2b4197774c3ab
5b5cc68be4d2b4197774c3ab- 1focused on helping poor African American workerstrue
- 2helped middle-class African Americans struggle for political and social justicefalse
- 3formed in response to race riots in 1908false
- 4led by Jane Addams and Ida B. Wellsfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "focused on helping poor African American workers"
Explanation :
Answer: A) focused on helping poor African American workers Explanation:
Q: Which of the following statements about ddntps is true? 2850 05b5cc688e4d2b4197774c350
5b5cc688e4d2b4197774c350- 1They have a hydrogen at the 3’ carbon of the sugar.true
- 2DNA polymerase can add a new dNTP to a 3’ ddNTP.false
- 3They have a free 3’-hydroxyl group on the ribose sugar.false
- 4They have an oxygen at the 2’ carbon of the ribose sugar.false
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "They have a hydrogen at the 3’ carbon of the sugar."
Explanation :
Answer: A) They have a hydrogen at the 3’ carbon of the sugar. Explanation: ddNTPs - Dideoxynucleotides and abbreviated as ddNTPs. They are chain-elongating inhibitors of DNA polymerase, used in the Sanger method for DNA sequencing. They have a hydrogen at the 3’ carbon of the ribose sugar.
Q: Choose the pair which shows the same relation of the given pair from the following options ? BRISTLE : BRUSH 2849 05b5cc6eee4d2b4197774ef20
5b5cc6eee4d2b4197774ef20- 1arm : legfalse
- 2key : pianotrue
- 3recline : chairfalse
- 4stage : curtainfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 2. "key : piano"
Explanation :
Answer: B) key : piano Explanation: A bristle is a part of a brush; a key is a part of a piano.
Q: Interest is usually associated with 2847 05b5cc607e4d2b4197774b544
5b5cc607e4d2b4197774b544- 1doubtful accountsfalse
- 2bad debtsfalse
- 3accounts receivablefalse
- 4notes receivabletrue
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 4. "notes receivable"
Explanation :
Answer: D) notes receivable Explanation: Interest is usually associated with notes receivable.
Q: Which of the following pairs is mismatched? 2845 05b5cc6a8e4d2b4197774ce8b
5b5cc6a8e4d2b4197774ce8b- 1Pila globosa - pearltrue
- 2Kenia lacca - lacfalse
- 3Apis indica - honeyfalse
- 4Bombyx mori - silkfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "Pila globosa - pearl"
Explanation :
Answer: A) Pila globosa - pearl Explanation: Pinctada vulgaris is a bivalve from which pearl is obtained.
Q: Which Country has opened its fifth Nuclear Power Plant to meet its growing energy demands ? 2844 05b5cc6c6e4d2b4197774de63
5b5cc6c6e4d2b4197774de63- 1Indiafalse
- 2Pakistantrue
- 3Russiafalse
- 4Chinafalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 2. "Pakistan"
Explanation :
Answer: B) Pakistan Explanation:
Q: Arun and Varun started business in partnership investing Rs. 20,000 and Rs. 15,000 respectively. After six months, Akhil joined them with Rs. 20,000. What will be Varun's share in the total profit of Rs. 25,000 earned at the end of 2 years from the starting of the business ? 2842 05b5cc6fbe4d2b4197774f0f1
5b5cc6fbe4d2b4197774f0f1- 1Rs. 7500true
- 2Rs. 4520false
- 3Rs. 8750false
- 4Rs. 6350false
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "Rs. 7500"
Explanation :
Answer: A) Rs. 7500 Explanation: Arun : Varun : Akhil = (20000 x 24) : (15000 x 24) : (20000 x 18) = 4:3:3 B's share = 25000 x 3/10 = Rs. 7500.