A. HF B. HCl C. HBr D. HI
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A. Calamine B. Pitch blende C. Cryolite D. None
A. Zinc blende B. White vitriol C. Blue vitriol D. Calamine
A. Triglyceride B. Lecithin C. Steroid S. Carotenoids
A. 0 B. 1 C. 2 D. 3
A. Sodium chloride B. Chlorine gas C. Calcium hypochlorite D. Phosgene
A. Benzene B. Toluene C. Benzaldehyde D. Benzoic acid
A. Nucleophilic substitutions reaction B. Electrophilic substitutions reaction C. Free radical substitutions reaction D. None of these
A. Amylase B. Maltase C. Lipase D. Pepsin
A. Polysaccharide B. Proteins C. Nucleotide D. Vitamins