- (A) Pyrex
- (B) Flint
- (C) Crookes
- (D) None of these
Exam preparation MCQs with answers
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- (A) The annual depreciation rate for machinery and equipments in a chemical process plant is about 10% of the fixed capital investment
- (B) Annual depreciation rate of buildings in a chemical plant is about 3% of its initial cost
- (C) Insurance rates on annual basis in a chemical plant may be about 1% of the fixed capital investment
- (D) In a chemical industry, research and development cost amounts to about 15% of net sales realisation (NSR)
- (A) Wine, rum & Vodka are prepared by the formulation of fruit juice, sugar beet & rye respectively
- (B) Protein catalysts are called enzymes
- (C) The rate of chemical reaction is independent of the concentration of reactants at high concentration of enzymes
- (D) Total sugar content in molasses is about 10%
- (A) Phenol
- (B) Naphthalene
- (C) Benzene
- (D) Pyridine
- (A) Sodium phosphate
- (B) Sodium hexametaphosphate
- (C) Calcium phosphate
- (D) Tricresyl phosphate
- (A) Conversion of SO2 to SO3 in Monsanto-4 pass converter is about 98%
- (B) The chemical formula of oleum is H2S2O7, which is formed by saturating sulphuric acid with sulphur trioxide
- (C) Vitriol oil is nothing but technical sulphuric acid
- (D) Decomposition of sulphuric acid on heating does not start before its boiling
- (A) Pasteurisation of milk involves moderate heating followed by cooling
- (B) Bakeries and breweries make use of yeasts
- (C) Enzyme is a complex nitrogenous compound
- (D) Oils and fats are alkaloids
- (A) Fibrillation of fibre during paper manufacture is done to develop the strength in paper
- (B) Alkali consumption in digestion/cooking of bamboo is measured in terms of permanganate number
- (C) Bagasse fibre contains both lignin & cellulose
- (D) Presence of sodium sulphate in pulp makes the pulp bleachability poor
- (A) Sodium silicate
- (B) Sodium borate
- (C) Sodium tripolyphosphate (STPP)
- (D) Caustic soda
- (A) Cause cholesterol build up and blood clotting
- (B) Are prone to rancid oxidation
- (C) Always contain some amount of nickel (as their complete removal is very difficult)
- (D) Have affinity to retain harmful sulphur compounds
