Group V A and Group VI A Elements

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MCQ's with answers from chapter 4 Group V A and Group VI A Elements chemistry book 2 for FSC pre engineering and pre medical for Board of Intermediate and Secondary education. Also For Entry Test Preparation for UET, NUST, PIEAS, GIKI, AIR, FAST, WAH University, UHS, other eningeering Universities and Medical Colleges.

1. Which substance in cement has greater percentage?
   1. Magnesia
   2. Alumina
   3. Lime
   4. silica
2. What is maximum no.lof electron in an orbital with m( magnetic quantum number)=3
   1. 6
   2. 4
   3. 3
   4. 2
3. Rectified spirit is an example of ______________ mixture
   1. Azeotropic
   2. Zeotropic
   3. Ideal
   4. Equilibrium
4. Which of the following rays has greater frequency
   1. α- rays
   2. β-rays
   3. γ-rays
   4. x.rays
5. Fruit juices and Fizzy drinks such as lemonade are often sold in aluminum cans. What is the most important reason aluminum is a suitable metal?
   1. Aluminum can be recycled
   2. Aluminum has very low density
   3. Aluminum is the most abundant metal in the earth crust
   4. Aluminum is resistant to corrosion by organic acids
6. Which of the following should not be used with hydrochloric acid to prepare zinc chloride?
   1. Zinc carbonate
   2. Zinc metal
   3. Zinc hydroxide
   4. Zinc nitrate
7. Which of the following will not give iodoform reaction?
   1. 2-methyl-1-Butanol
   2. Ethanal
   3. Methyl ethyl ketone
   4. 3-Methyl-2-propanol
8. Two different hydrocarbons each contain the same percentage by mass of hydrogen. It follows that they have the same
   1. Empirical formula
   2. Number of atoms in a molecule
   3. Number of isomers
   4. Relative molecular mass
9. Which of the following metals has an oxide that cannot be reduced by heating with magnesium?
   1. Calcium
   2. Copper
   3. Iron
   4. silver
10. Which of the following statement is not correct
    1. The electronic configuration of Cr is[Ar] 3d54s1
    2. The magnetic quantum number may have negative value
    3. In silver,23 electrons have a spin of one type and 24 of the opposite type
    4. The oxidation state of hydrogen in NH3 is +3
11. In an accident at a factory, some nitric acid was spilt. Which substance, when added in excess, would neutralize the acid without leaving an alkaline solution.
    1. Aqueous ammonia
    2. Calcium carbonate
    3. Sodium chloride
    4. Aqueous sodium hydroxide
12. The alkene which produces only ketones upon ozonolysis?
    1. Ethane
    2. Propene
    3. 2-Butene
    4. none
13. N2+3H2 2NH3 + heat. The activation energy for the forward as well as backward reaction is decreased by 100 J, then the equilibrium amount of NH3 will
    1. Increase
    2. Decrease
    3. Remains constant
    4. Cannot predict
14. Which among the following is correct about the energy sequence( in case of H-atom)
    1. 3s<3p<3d
    2. 3s=3p=3d
    3. 3s>3p>3d
    4. 3s>3p<3d
15. Which of the following is the b3est method of separating the mixture of inks?
1. Centrifuging
2. Chromatography
3. Distillation
4. Filtration