Multiple Choice QuestionsWhich of the following is/are incorrect representation(s) of bleaching powder?
Ca2+(Cl2O)2+
Ca2+(ClO2)Cl2-
Ca2+(ClO+)Cl-
All of these
On mixing urea with nitrous acid, the composition of the products is
NH2-NH2 + CO2
N2 + C + H2O
NH3 + CO2 + H2O
N2 + CO2 + H2O
Mark out the correct decreasing order of ease of addition of halogen.
CH2=CH2 > CH3-CH=CH-CH3 > CH3-C(CH3)=CH2 > (CH3)2C=C(CH3)2
(CH3)2C=C(CH3)2 > CH3-C(CH3)=CH2 > CH3-CH=CH-CH3 > CH2=H2
(CH3)2C=C(CH3)2 > CH3-CH=CHCH3 > CH3-C(CH3)=CH2 > CH2=CH2
CH2=CH2 > CH3-C(CH3)=CH2 > CH3-CH=CH-CH3 > (CH3)2C=C(CH3)2
Which of the following statements is/are true about the P-Cl bonds in PCl5 ?
Three bonds are of one type and two of another type
Two bonds are of one type and three of another type
All the bonds are of the same type
both (a) and (b)
In the following Haber synthesis of NH3, the equilibrium constant for NH3, formation, on increase in temperature, is
decreased
increased
first decreased and then increased
not altered
Which one of the following represents the correct number of types of P-O bonds in P4O10?
1
2
3
4
One mole of P4O10 is allowed to react fully with dust and salt-free doubly distilled water and the volume is made up to 1L. What is the normality of the so-generated orthophosphoric acid?
P4O10 + 6H2O → 4H3PO4
1.0 N
8.0 N
12.0 N
4.0 N
C.
12.0 N
P4O10 + 6H2O → 4H3PO4
1mol 4mol
Thus, 4 moles of orthophosphoric acid are generated in 1L solution.
Molarity = 4M
and normality = molarity × basicity = 4 × 3 = 12.0 N
Which of the following statements about the monomer and dimer of NO2 is/are not true?
Both are diamagnetic
Both are paramagnetic
The dimer is paramagnetic and the monomer is not
all of these
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