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Which of the following is not a pyrimidine?
1. Thymine
2. Uracil
3. Guanine
4. Cytosine 

Subtopic:  Nucleic Acid | The DNA |
 75%
From NCERT
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Given below are two statements
Statement I: Living organisms are considered as a closed system
Statement II: Energy of living organisms cannot be lost or gained from the external environment
In light of the above statements, choose the most appropriate answer from the options given below
1. Both Statement I and Statement II are correct
2. Both Statement I and Statement II are incorrect
3. Statement I is correct but Statement II is incorrect
4. Statement I is incorrect but Statement II is correct
Subtopic:  METABOLIC BASIS FOR LIVING (OLD NCERT) | THE LIVING STATE (OLD NCERT) |
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The back bone of RNA consists of which of the following sugar?
1. Deoxyribose
2. Ribose
3. Sucrose
4. Maltose 
Subtopic:  Nucleic Acid |
 76%
From NCERT
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Which one is the sweetest sugar?
1. Glucose
2. Fructose
3. Sucrose
4. Maltose 
Subtopic:  Carbohydrates |
 53%
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Protein present in silk fibre is
1. casein
2. keratin
3. elastin
4. fibroin 
Subtopic:  Proteins |
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Which of the following amino acids is not optically active? 
1. Glycine 
2. Valine 
3. Leucine 
4. Isoleucine 
Subtopic:  Amino Acids |
 62%
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Paraffin wax is 
1. ester 
2. acid 
3. monohydric alcohol 
4. cholesterol 
Subtopic:  Lipids |
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Glucose is
1. Cane sugar 
2. Grape sugar
3. Malt sugar
4. Triose sugar
 
Subtopic:  Carbohydrates |
 52%
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Pentoses and hexoses are common
1. Oiigosaccharides
2. Disaccharides
3. Monosaccharides
4. Polysaccharides
 
Subtopic:  Carbohydrates: Introduction |
 60%
From NCERT
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Which of the following is present in acid insoluble fraction? 
1. Glucose 
2. Fructose 
3. Alanine
4. Lipid
 
Subtopic:  Lipids |
 87%
From NCERT
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