Group V A and Group VI A Elements MCQ's Test 2

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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. How many moles of oxygen O2 are needed for the complete combustion of 2 moles of Butane, C4H10
   1. 2
   2. 10
   3. 8
   4. 13
2. When aqueous ammonium chloride was heated with aqueous Y, a gas which turned Universal Indicator paper blue was evolved. Which ion must have been present in Y?
   1. Cl-
   2. H+
   3. OH-
   4. Na+
3. Which of the following is not an industrial use of chlorine
   1. Making cooking slats
   2. Making domestic bleaches
   3. Making hydrochloric acid
   4. Making PVC plastics
4. When acetone and chloroform are mixed, hydrogen bonding takes place between then; such a liquid pair will cause
   1. Positive deviation from Raoult’s law
   2. Negative deviation from Raoult’s law
   3. Obeys Raoult’s law
   4. Cannot be predicts
5. Which salt when added in water decreases the pH of solution.
   1. Na2SO4
   2. CuSO4
   3. Na2BO7
   4. K2CO3
6. All the periodic properties have same periodicity except
   1. Ionization energy
   2. Electron affinity
   3. Electronegativity
   4. Atomic radius
7. Which one of the following has incomplete octet
   1. NF3
   2. BH3
   3. O2
   4. N2

1. Which of following is correct order of decreasing energy units
   1. Erg>cal>j
   2. Erg>J>cal
   3. Cal>J>erg
   4. J>cal>erg
2. The substance which can act as oxidizing as well as reducing agent is/are:
   1. H2O2
   2. O3
   3. NH2---NH2
   4. HNO3
3. Which of the following is incorrect about fermentation
   1. Exothermic process
   2. Optimum temperatures 25-35 0C
   3. Proper aeration
   4. Concentration of the above
4. Cannizzaro’s reaction is given by
   1. C6H5CHO
   2. C6H5COCH3
   3. C6H5COOH3
   4. NONE
5. During hydrogenation of oils which of the following catalyst is use
   1. Pd
   2. Fe
   3. Ni
   4. V2O5
6. Which of following period contains element of all blocks
   1. 2
   2. 4
   3. 5
   4. 6
7. Isotopes are sister atoms of same which are similar with respect to the followings except:
   1. Atomic number
   2. m/e value
   3. chemical properties
   4. position in periodic table
8. Loss of a β-particle is equivalent to
   1. Increase in number of protons by one
   2. Decrease in number of neutrons by one
   3. Change in atomic mass by one unit
   4. None of these