Thursday, 5 March 2020

Chemistry Objective Type Question Answers List

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Solved Chemistry Question Answers With Solutions
Chemistry MCQs List


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Solved Chemistry MCQs With Answers List




Q.1: Element with higher oxidation state form oxides ?
  1. Peroxides
  2. Basic
  3. Acidic
  4. Amphoteric
C
Q.2: The Ravi River falls in ?
  1. Sutlej
  2. Indus
  3. Chenab
  4. Jhelum
C
Q.3: Catalytic oxidation of benzene gives ?
  1. Nitrobenzene
  2. Maleic anhydride
  3. Benzophenone
  4. Benzene sulphonic acid
B
Q.4: Which property of a liquid is measured by polarimeter ?
  1. Refractive index
  2. Optical activity
  3. Change in volume
  4. Conductance
B
Q.5: Isomers are written for a compound, if it has carbon atoms at least ?
  1. Three
  2. Four
  3. Two
  4. One
B
Q.6: Reaction of Grignard’s reagent with aldehyde gives ?
  1. Ethanoic acid
  2. Secondary alcohol
  3. Tertiary alcohol
  4. Primary alcohol
D
Q.7: A reaction is reversible because ?
  1. Products are stable
  2. Reactants are reactive
  3. Reactants are stable
  4. Products are reactive
D
Q.8: Doab means ?
  1. Land situated between rivers and mountains
  2. Land situated between two rivers
  3. None of them
  4. Land situated between two regions
B
Q.9: Periodic law was given ?
  1. Mendeleev
  2. Dobriener
  3. Newland
  4. Al-Razi
A
Q.10: Aroma means ?
  1. Fragrant
  2. Rock oil
  3. Least affinity
  4. Indivisible
A
Q.11: Which one of the following has the same number of electrons as an alpha particle ?
  1. Li⁺
  2. H⁺
  3. He
  4. H
B
Q.12: Which of the following particles has longest wavelength, if they have same speed ?
  1. Positron
  2. Electron
  3. Proton
  4. Neutron
B
Q.13: The branch of chemistry which deals with quantitative relationship between reactants and products in a balanced chemical equation is called ?
  1. Inorganic chemistry
  2. Stoichiometry
  3. Biochemistry
  4. Analytical
B
Q.14: Most of the universe consists of the matter in ?
  1. Solid state
  2. Gaseous state
  3. Liquid state
  4. Plasma state
D
Q.15: Which of the following was discovered first ?
  1. Charge of electron
  2. All of above at same time
  3. Mass of electron
  4. Charge to mass ration of electrons
D
Q.16: Chemical reactivity of elements depends upon their characteristics ?
  1. Shape
  2. Electronic configurations
  3. Sizes
  4. Colour
B
Q.17: Out of all the elements of group V-A, the highest ionization energy is possessed by ?
  1. P
  2. Sb
  3. Bi
  4. N
D
Q.18: Which period starts from ₁₁Sc to ₃₀Zn ?
  1. 4th period
  2. First period
  3. Second period
  4. Third period
C
Q.19: A polymeric substance that is formed in the liquid state and then hardened to rigid solid is called a ?
  1. Plastic
  2. Fibre
  3. Polyamide resin
  4. Varnish
A
Q.20: Arenes are also called ?
  1. Hydrocarbons
  2. Benzene
  3. Aromatic
  4. Atom
B
Q.21: Aldehydes and methyl ketones reacts with saturated solution of sodium bisulphate forming precipitate ?
  1. Silver mirror
  2. Yellow or red ppt
  3. Brick red
  4. White ppt
D
Q.22: The total heat contents of a system is called ?
  1. Chemical potential
  2. Enthalpy
  3. Bond energy
  4. Entropy
B
Q.23: Chemical formula of white lead is ?
  1. PbCrO4
  2. PbCO3 Pb(OH)2
  3. Pb3O4
  4. PbO
B
Q.24: Wohler prepared compound from ammonium cyanate ?
  1. Urea
  2. Carbohydrates
  3. Lipids
  4. Protein
A
Q.25: Which one of the following is not a nucleophile ?
  1. NH₃
  2. BF₃
  3. H₂O
  4. H₂S
B
Q.26: The rate of a chemical reaction is directly proportional to product of molar concentration of reacting substance. It is called ?
  1. Law of conservation of energy
  2. Law of mass action
  3. Active mass rule
  4. Rate law
B
Q.27: Bolan Rukshan are the rivers flowing in ?
  1. Punjab
  2. Balochistan
  3. KPK And Balochistan
  4. KPK
B
Q.28: Law of octaves was given by ?
  1. Mendeleev
  2. Al-Razi
  3. Dobriener
  4. Newland
D
Q.29: Molarity of pure water is ?
  1. 33.3
  2. 66.6
  3. 44.4
  4. 55.5
D
Q.30: Surface tension is measured in units of ?
  1. N f
  2. Ergs
  3. Nm -1
  4. Joule
C
Q.31: Borax occurs a natural deposits as ?
  1. Feldspar
  2. Borite
  3. Aluminite
  4. Tincal
D
Q.32: Concentrated sulphuric acid acts as ?
  1. Dehydrating agent
  2. Decarboxylating agent
  3. Hydrogenating agent
  4. Dehydrogenating agent
A
Q.33: Crystalline solids, which contain water molecules in their crystals, are called ?
  1. Hydrides
  2. Complex solids
  3. Hydrolyzed
  4. Hydrates
D
Q.34: Pb has inert pair of electrons ?
  1. Four
  2. Two
  3. Three
  4. One
B
Q.35: 100% covalent bond exists between atoms of ?
  1. same elements
  2. Different ions
  3. Same group
  4. Different elements
A
Q.36: Hard steel contains carbon in it ?
  1. 0.7-1.5%
  2. 0.1-0.2%
  3. 0.2-1.5%
  4. 0.2-0.7%
A
Q.37: Gases exert pressure on walls of container because the gas molecules ?
  1. Obey gas laws
  2. Collide with each other
  3. Have definite volume
  4. Collide with the walls of container
D
Q.38: A process is solid to be ---------- if the temperature remains constant throughout ?
  1. Exothermic
  2. Endothermic
  3. Adiabetic
  4. Isothermal
D
Q.39: Which property of oxygen resembles with sulphur ?
  1. Ionic bond formation
  2. O- has no but S- has isotopes
  3. No poly atomic molecules
  4. Typical non-metals
D
Q.40: Aliphatic aldehydes reacts with Fehling solution and Benedict solution forming precipitate ?
  1. Brick red
  2. Silver mirror
  3. Yellow or red ppt
  4. White ppt
A
Q.41: 2, 4, 6 tribromophenol forms when phenol directly reacts with ?
  1. Nitric acid
  2. Hydrogen
  3. Formaldehyde
  4. Bromine
D
Q.42: Carboxyl compounds have functional group ?
  1. R-CH=O
  2. R-C-X
  3. RCOR
  4. All
D
Q.43: Which of the following is not a fatty acid ?
  1. Phthalic acid
  2. Propanic acid
  3. Butanoic acid
  4. Acetic acid
B
Q.44: In a solution of both KCI and KCIo4 precipitating compound is ?
  1. Only KCI
  2. Both KCI and KCIo4 equally
  3. Only KCIo4
  4. None of these
C
Q.45: The unit of the rate constant is the same as that of rate of reaction in ?
  1. First order reaction
  2. Second order reaction
  3. Zero order reaction
  4. Third order reaction
C
Q.46: Isomers of butane are ?
  1. 2
  2. 10
  3. 8
  4. 5
A
Q.47: The rate of reaction ?
  1. Decrease as reaction proceeds
  2. May decrease or increase as reaction proceeds
  3. Increases as reaction proceeds
  4. Remains same as reaction proceeds
A
Q.48: Most stable hydrides is of ?
  1. Bismuth
  2. Fluorine
  3. Lead
  4. Thallium
B
Q.49: Properties of gases and liquids are ?
  1. Anisotropic
  2. Isomorphic
  3. Isotropic
  4. Isomeric
C
Q.50: Biopolymers are ?
  1. Protein
  2. Carbohydrates
  3. Lipid
  4. All of these
D


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