Chemistry Question Answer

Q46. Which one is the simplest aromatic hydrocarbon
(a) Aspirin
(b) Benzene
(c) Chloride
(d) Picric acid

Q47. Which color is produce by Arsenic during flame test
(a) Green
(b) Red
(c) Crimson
(d) Blue

Q48. How many atoms of oxygen are in a glucose molecule
(a) 3
(b) 4
(c) 6
(d) 10

Q49. In a Carbonyl group a carbon atom makes double bond with
(a) Carbon
(b) Oxygen
(c) Hydrogen
(d) None of the above

Q50. The length of double bond is _______ than single bond
(a) Shorter
(b) Longer
(c) Of same lenght
(d) None of the above

Q51. Which one is not a primary greenhouse gases in the Earth's atmosphere
(a) Carbon dioxide
(b) Methane
(c) Nitrogen
(d) Ozone

Q52. Which of the following has a fundamental unit only
(a) Time
(b) Force
(c) Volume
(d) Velocity

Q53. Potassium is extracted by the electrolysis of
(a) KCI
(b) KBr
(c) fused KOH
(d) None of the above

Q54. The metal ion present in Vitamin B12 is
(a) Nickel
(b) Cobalt
(c) Iron
(d) Zinc

Q55. Molten sodium chloride conducts electricity due to the presence of
(a) free ions
(b) free atoms
(c) free electrons
(d) free molecules

Q56. Peptization is a process of
(a) precipitation of colloidal particles
(b) purification of colloids
(c) protection of colloidal solution
(d) dispersing precipitates into colloidal solution

Q57. Neoprene is a polymer of
(a) Chloroprene
(b) Isoprene
(c) Isobutane
(d) Isopentane

Q58. The influence of temperature on reaction rate is predicted by
(a) van der Waals equation
(b) Kirchhoff's equation
(c) Arrhenius equation
(d) Lewis equation

Q59. The minimum energy required for an effective collision is
(a) Threshold energy
(b) Activation energy
(c) Free energy
(d) Internal energy

Q60. Entropy of Universe is always
(a) Decreasing
(b) Zero
(c) Constant
(d) Increasing

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