IIT JEE Practice Question and Answer
8Q: Which of the following statements about monosaccharide structure is true? 1999 05b5cc65ee4d2b4197774be2c
5b5cc65ee4d2b4197774be2c- 1Aldoses and ketoses differ in the position of their hydroxyl groups.false
- 2Monosaccharides can be classified according to the spatial arrangement of their atoms.true
- 3All monosaccharides contain carbon, hydrogen, oxygen, and nitrogen atoms.false
- 4A six-carbon sugar is called a pentose.false
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Answer : 2. "Monosaccharides can be classified according to the spatial arrangement of their atoms."
Explanation :
Answer: B) Monosaccharides can be classified according to the spatial arrangement of their atoms. Explanation: Monosaccharides, also called simple sugars, are the most basic units of carbohydrates. They are fundamental units of carbohydrates and cannot be further hydrolyzed to simpler compounds. Hence, Monosaccharides can be classified according to the spatial arrangement of their atoms is true about Monosaccharides.
Q: How many chromosomes are in a human gamete? 1998 05b5cc69ce4d2b4197774c81b
5b5cc69ce4d2b4197774c81b- 123true
- 246false
- 392false
- 4102false
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Answer : 1. "23"
Explanation :
Answer: A) 23 Explanation: 23 chromosomes are in a human gamete. Human somatic cells have 46 chromosomes(23 pairs) but a gamete(germ cell) gets half the amount, i.e. 23 chromosomes, (one from each pair). There will be half the number of chromosomes an organism has in its somatic cells (all other body cells except gametes). For example in humans, the somatic cells contain 46 chromosomes which are the diploid number (2n) and each sperm and egg has 23 chromosomes where one of them is the sex chromosome.
Q: Who was the first cricketer to take all wickets in a test innings? 1997 05b5cc670e4d2b4197774c011
5b5cc670e4d2b4197774c011- 1Curtly Ambrosefalse
- 2Jimmy Mathewsfalse
- 3Jim Lakertrue
- 4Anil Kumblefalse
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Answer : 3. "Jim Laker"
Explanation :
Answer: C) Jim Laker Explanation: Jim Laker was the first player to take all 10 wickets in a Test match innings. Ten for 53 in the Australians 2nd innings of the 4th Ashes Test at Old Trafford in 1956. The only other bowler to achieve the feat is India's Anil Kumble, who took ten for 74 at Delhi's Feroz Shah Kotla against Pakistan in 1999.
Q: Which structure is common to plant and animal cells? 1997 05b5cc6a2e4d2b4197774cbb3
5b5cc6a2e4d2b4197774cbb3- 1Centriolefalse
- 2Chloroplastfalse
- 3Central Vacuolefalse
- 4Mitochondriatrue
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Answer : 4. "Mitochondria"
Explanation :
Answer: D) Mitochondria Explanation: Mitochondria are present in both plant and animal cells.
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Answer :
Explanation :
11 P in a CT means 11 Players in a Cricket Team.
Q: How many Enzymes are there in the Human Body? 1997 05b5cc6b3e4d2b4197774d3dc
5b5cc6b3e4d2b4197774d3dc- Show AnswerHide Answer
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Answer :
Explanation :
There are nearly about 75000 enzymes of 3 classes are there in the human body. They are : 1. Metabolic Enzymes - Enzymes that help to run our Bodies 2. Digestive Enzymes - Enzymes that help in digesting Food 3. Food Enzymes - Enzymes from raw foods that start our Food digestion.
Q: A Committee of 5 persons is to be formed from a group of 6 gentlemen and 4 ladies. In how many ways can this be done if the committee is to be included atleast one lady? 1997 05b5cc7d1e4d2b41977751286
5b5cc7d1e4d2b41977751286- 1123false
- 2113false
- 3246true
- 4945false
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Answer : 3. "246"
Explanation :
Answer: C) 246 Explanation: A Committee of 5 persons is to be formed from 6 gentlemen and 4 ladies by taking. (i) 1 lady out of 4 and 4 gentlemen out of 6 (ii) 2 ladies out of 4 and 3 gentlemen out of 6 (iii) 3 ladies out of 4 and 2 gentlemen out of 6 (iv) 4 ladies out of 4 and 1 gentlemen out of 6 In case I the number of ways = C14×C46 = 4 x 15 = 60 In case II the number of ways = C24×C36 = 6 x 20 = 120 In case III the number of ways = C34×C26 = 4 x 15 = 60 In case IV the number of ways = C44×C16 = 1 x 6 = 6 Hence, the required number of ways = 60 + 120 + 60 + 6 = 246
Q: A seven letter word containing thousands of letters is what? 1997 05b5cc695e4d2b4197774c519
5b5cc695e4d2b4197774c519- Show AnswerHide Answer
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Answer :
Explanation :
It is a Postbox or a Mailbox which contains thousands of letters or mails or messages.

