Chemistry Solved Questions and Answers Set 32

February 8, 2019 entranciology Chemistry Solved Questions and Answers Sets, Solved Questions and Answers Sets For Competitive Exams 0

Q.1:- The first organic compound synthesized in the laboratory was ? [SSC Exam 2014]

  1. Urea
  2. Uric Acid
  3. Lactic Acid
  4. Glucose

Q.2:- Chromatography technique is used for the separation of ?

  1. Small sample of mixture
  2. Plant pigments
  3. Dye stuffs
  4. All of the above

Q.3:- Tetrahedral nature of bonding in carbon atom was first shown by ?

  1. Kekule
  2. Lewis
  3. Kolbe
  4. Vant Hoff and Le-Bel

Q.4:- Bond length is shortest in ?

  1. Methane
  2. Acetylene
  3. Ethylene
  4. Ethane

Q.5:- Carbon and Hydrogen are estimated in organic compounds by ?

  1. Kjeldahl’s method
  2. Duma’s method
  3. Liebig’s method
  4. Carius method

Q.6:- In organic compound, halogens are estimated by ?

  1. Carius Method
  2. Liebig’s method
  3. Kjeldahl’s method
  4. Duma’s method

Q.7:- Chiral molecules are those which are ?

  1. Superimposable on their mirror image
  2. Not superimposable on their mirror image
  3. Unstable molecules
  4. Capable of showing geometrical isomerism
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Q.8:- The knocking will be minimum when the mixture of fuel is ?

  1. Straight chained
  2. Iso-Carbonation
  3. Neo-Carbonation
  4. None of these

Q.9:- Reforming is the process used for ?

  1. Preparation of Hydrocarbon
  2. Increasing the octane number
  3. Preparation of straight chain
  4. Preparation of aromatic Heterocyclic compounds

Q.10:- General formula CnH2n-2 represents ?

  1. Alkenes
  2. Alkanes
  3. Alkynes
  4. None of the above

Q.11:- Paraffin dissolves in ?

  1. Distilled water
  2. Methanol
  3. Benzene
  4. Salt water

Q.12:- Acetylene is used as an anaesthetic under the name of ?

  1. Narcylene
  2. Pyrene
  3. Neopyrene
  4. Pyroline

Q.13:- Petroleum consists of ?

  1. Aliphatic Hydrocarbons
  2. Aliphatic Alcohols
  3. Aromatic Derivatives
  4. None of the above

Q.14:- Ethylene reacts with sulphur monochloride to form ?

  1. Ethyl Chloride
  2. Ethylene Chloride
  3. Mustard Gas
  4. Ethylidene Chloride

Q.15:- When formic acid reacts with PCl5, it forms ?

  1. Acetyl Chloride
  2. Formyl Chloride
  3. Methyl Chloride
  4. Propionyl Chloride
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Q.16:- Paraldehyde is used as ?

  1. Medicine
  2. Poison
  3. Acetaldehyde
  4. Formaldehyde

Q.17:- Fehling’s solution is ?

  1. Acidified copper sulphate solution
  2. Ammoniacal cuprous chloride solution
  3. Copper sulphate and Rochelle salt + NaOH
  4. None of the above

Q.18:- Cyanogen on Hydrolysis with dil. HCl gives ?

  1. Formic Acid
  2. Acetic Acid
  3. Glycol
  4. Oxalic Acid

Q.19:- Soaps can be classified as ?

  1. Carbohydrates
  2. Ethers
  3. Salt of fatty acids
  4. None of these

Q.20:- The reverse of esterification process is called ?

  1. Neutralisation
  2. Hydrolysis
  3. Acidolysis
  4. Alcoholysis

Q.21:- Sucrose on hydrolysis gives ?

  1. Glucose only
  2. Glucose and Galactose
  3. Glucose and Fructose
  4. Glucose and Lactose

Q.22:- The vitamin that is most readily manufactured in our bodies is ?

  1. Vitamin A
  2. Vitamin B
  3. Vitamin C
  4. Vitamin D

Q.23:- Ascorbic acid is ?

  1. a vitamin
  2. an enzyme
  3. a protein
  4. an amino acid

Q.24:- Which one of the following petroleum refinery products has the lowest boiling point ? [NDA Exam 2009]

  1. Kerosene
  2. Lubricating Oil
  3. Gasoline
  4. Diesel
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Q.25:- The term ‘Carbon Foot Print’ means ? [EPFO Exam 2016]

  1. A region which is rich in coal mines
  2. The amount of reduction in the emission of CO2 by a country
  3. The use of Carbon in manufacturing industries
  4. The amount of greenhouse gases produced by our day-to-day activities

 

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