991. Which one of the following metals pollutes the air of a city having a large number of automobiles?
A: Chromium
B: Cadmium
C: Copper
D: Lead
992. The three elements most needed in common fertilizers are?
A: Sulphur, Phosphorous, and Sodium
B: Calcium, Phosphorous, and Potassium
C: Phosphorous, Sodium, and Nitrogen
D: Nitrogen, Potassium, and Phosphorous
993. Amino acids present in cheese___________________?
A: lysine
B: alanine
C: tyrosine
D: proline
994. Which of the following is an unsaturated carboxylic acid___________________?
A: malonic acid
B: oxalic acid
C: succinic acid
D: maleic acid
995. The common name of propane 1 3-dioic is_________________?
A: Oxalic acid
B: Aromatic acid
C: Malonic acid
D: Fumaric acid
996. The irritation caused by red ants bite is due to____________________?
A: Lactic acid
B: Formic acid
C: Uric acid
D: Acetic acid
997. Which of the following is the strongest acid ?
A: Water
B: Formic acid
C: Acetic acid
D: Propanoic acid
998. Acidic amino acids have________________?
A: 2 amino groups and 1 carboxylic group
B: 1 amino and 1 carboxylic groups
C: 2 carboxylic groups and 1 amino group
D: 2 amino and 2 carboxylic groups
999. The term internal salt refers to_____________________?
A: Acidic character of amino acids
B: Basic character of amino acids
C: Dipolar character of amino acids
D: Non-polar structure of amino acids
1000. Which one of the following acids is present in lemon juice ?
A: Citric acid
B: Benzoic acid
C: Tartaric acid
D: Oxalic acid
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