Q. All enzymes that use ATP for phosphate transfer require it as a cofactor.
The correct answer was: Magnesium
Q. 99.985% of hydrogen atoms have only one proton. This isotope is called:
The correct answer was: Protium (H)
Q. Used in the manufacture of paints and varnishes:
The correct answer was: Glyptal
Q. Sodium fusion extract is acidified with acetic acid and then lead acetate is added. The presence of a black precipitate of lead sulfide indicates:
The correct answer was: Sulfur
Q. Obtained by copolymerization of 3-hydroxybutanoic acid and 3-hydroxypentanoic acid:
The correct answer was: PHBV
Q. Borax is:
The correct answer was: Na₂B₄O₇.10H₂O
Q. Under isothermal conditions, __________ = 0 for an irreversible process.
The correct answer was: ΔU
Q. The decomposition of gaseous ammonia on a hot platinum surface at high pressure is a reaction of:
The correct answer was: Zero order
Q. The unit of the rate constant for a first-order reaction is:
The correct answer was: s-1
Q. Two solutions having the same osmotic pressure at a given temperature are called:
The correct answer was: Isotonic solutions
Q. Methoxypropane and Ethoxyethane are represented by:
The correct answer was: Tautomerism
Q. ZSM-5 (a type of zeolite) is used to convert directly into gasoline.
The correct answer was: Amine
Q. When radiation falls on a metallic surface, electrons are ejected. This phenomenon is called:
The correct answer was: Black-body absorption
Q. Which of the following has the most alkaline nature?
The correct answer was: Na₂O
Q. Commercial fibers like Orlon or Acrilan are used as a substitute for wool.
The correct answer was: Polyacrylonitrile
Q. Excess of this in drinking water can cause diseases like Blue Baby Syndrome:
The correct answer was: Nitrate
Q. For a solution, the partial vapor pressure of each volatile component is directly proportional to its:
The correct answer was: Mole fraction
Q. A jug contains 2 L of milk. Find the volume of milk in m³.
The correct answer was: 2×10⁻³ m³
Q. The molarity of NaOH in solution is made by dissolving 4 grams of it in enough water to make 250 mL of solution.
The correct answer was: 4 M
Q. Neoprene is formed by free radical polymerization of:
The correct answer was: Chloroprene
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