Which of the following gases is the main cause of acid rain ?
Which of the following gases is the main cause of acid rain ?
A. CO
B. NO2
C. both a & b
D. none of the above
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Acidic amino acids have________________?
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 groupsThe element used for the formation of alloys is__________?
The element used for the formation of alloys is__________?A. Iron
B. Calcium
C. Mercury
D. ChromiumWhich of the following is not a use of silicon ?
Which of the following is not a use of silicon ?A. Lubricants
B. Hydraulic brakes
C. Antifreeze
D. Water repellentWhich one of the following gives white precipitate with aqueous solution of BaCl2?
Which one of the following gives white precipitate with aqueous solution of BaCl2?A. NaHCO3
B. NaNO3
C. Na2CO3
D. Na2CrO4Which of the following set has all species isoelectronic__________________?
Which of the following set has all species isoelectronic__________________?A. F – Cl – Br
B. Li+1 – Na+1 – K+1
C. F – Ne – Na+
D. H+ – H- – Hnergy of atom in compound is___________________?
nergy of atom in compound is___________________?EA. Higher than individual
B. Lesser than individual
C. No change
D. Impossible to predict