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1)
At low pH or in acidic condition amino acid acts as:
- A) Anion
- B) Cation
- C) Zwittor ion
- D) Neutral specie
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2)
Which one of the following reagent is used for identification of amino acids?
- A) Fehling`s solution
- B) Benedicts solution
- C) Ninhydrin
- D) Copper sulphate
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3)
Which one of the following is an example of condensation polymer?
- A) Polyvinylchloride
- B) Polystyrene
- C) Polythene
- D) Polyamide
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4)
Among the most common diasaccharides, which one of the following is present in milk?
- A) Sucrose
- B) Maltose
- C) Fructose
- D) Lactose
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5)
Fats are types of lipid called glycerides. They are esters of long chain carboxylic acid ands and:
- A) Propene 1, 2 ,3 triol
- B) Propane 1 ,2 ,3 triol
- C) Propene 1,2,3-diol
- D) Propane 1,2,3-diol
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6)
Which one of the following base is not present in RNA?
- A) Cytosine
- B) Adenine
- C) Thymine
- D) Guanine
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7)
Collagen proteins are absent in _______ throughout the body.
- A) Muscle
- B) Red blood cells
- C) Tendons
- D) Blood plasma
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8)
Which one of the following pollutants can cause of death of a person by binding with haemoglobins in red blood cells?
- A) Chlorofluerocarbons
- B) Oxides of sulphur
- C) Carbon monoxide
- D) Oxides of nitrogen
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9)
Q.78 If halogenoalkanes are mixed with an excess of ethanolic ammonia and heated under pressure amine are formed. Which amine is formed in the following reaction?
CH3CH2Br + NH3 → Amine
- A) CH3-CH2-NH-CH2-CH3
- B) CH3-CH2-NH2
- C) CH3-CH2-CH2-NH3
- D) H2N-CH2-CH2-NH3
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10)
Q.56 The vapour pressure lines for pure as well as solutions of different concentrations are shown below. Which line repeats pure water?
- A) (I)
- B) (II)
- C) (III)
- D) (IV)
