Multiple Choice QuestionsWhich of the following is the weakest acid?
HCl
HF
H2SO4
HNO3
B.
HF
Higher the tendency to give H+ ion ( i.e to undergo ionisation), stronger will be the acid or vice-versa.
HF has poor tendency to give H+ ion, hence it is the weakest acid among the given.
The order of acidity of given acids is:
H2SO4 > HNO3 > HCl > HF.
Which of the following contains greatest number of oxygen atoms ?
1 g of O
1 g of O2
1 g of O3
All have the same number of atoms
Bleaching powder is obtained by the interaction of chlorine with
concentrated solution of calcium hydroxide
dilute solution of calcium hydroxide
dry calcium oxide
dry slaked lime
Hypo is used in photography due to its
reaction with light
reducing property
oxidising property
complex forming nature
Which 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)
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