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Chemistry Basic Concept

The compound which is added to leaded gasoline to save engine from lead oxide and lead sulphate deposits is__________________?

August 30, 2021March 13, 2019 by admin
The compound which is added to leaded gasoline to save engine from lead oxide and lead sulphate deposits is__________________?

A. Ethylene iodide
B. Ethylene bromide
C. Ethylene chloride
D. Ethylene fluoride

Categories Chemistry Basic Concept, Chemistry Mcqs

Which of the following elements conduct electricity and also melts below 100°C ?

August 30, 2021March 13, 2019 by admin
Which of the following elements conduct electricity and also melts below 100°C ?

A. Aluminium
B. Sodium
C. Carbon
D. Sulphur

Categories Chemistry Basic Concept, Chemistry Mcqs

Acid present in acid rain may be_________________?

August 30, 2021March 13, 2019 by admin
Acid present in acid rain may be_________________?

A. H2SO4
B. HNO3
C. both A and B
D. none of the above

Categories Chemistry Basic Concept, Chemistry Mcqs

The unit of the rate constant (k) is same as that of rate of reaction________________?

August 30, 2021March 13, 2019 by admin
The unit of the rate constant (k) is same as that of rate of reaction________________?

A. First order reaction
B. Second order reaction
C. Zero order reaction
D. Third order reaction

Categories Chemistry Basic Concept, Chemistry Mcqs

Which of the following elements react with steam to produce H2 gas?

August 30, 2021March 13, 2019 by admin
Which of the following elements react with steam to produce H2 gas?

A. Pd
B. Ni
C. Sn
D. All of the above

Categories Chemistry Basic Concept, Chemistry Mcqs

Consider the following redox reaction. Zn+dil HNO3? Zn (NO3)2 + N2O + H2O The coefficient number of HNO3 in the equation is__________________?

August 30, 2021March 13, 2019 by admin
Consider the following redox reaction. Zn+dil HNO3? Zn (NO3)2 + N2O + H2O The coefficient number of HNO3 in the equation is__________________?

A. 6
B. 8
C. 10
D. 4

Categories Chemistry Basic Concept, Chemistry Mcqs

A solution can be both____________________?

August 30, 2021March 13, 2019 by admin
A solution can be both____________________?

A. dilute and concentrated
B. dilute and saturated
C. saturated and unsaturated
D. saturated and super saturated

Categories Chemistry Basic Concept, Chemistry Mcqs

The unit of molality is__________________?

August 30, 2021March 13, 2019 by admin
The unit of molality is__________________?

A. moles dm-3
B. moles kg-1
C. gram dm-3
D. none

Categories Chemistry Basic Concept, Chemistry Mcqs

Solubility of CaF2 is 2.0×10-4 gdm-3 then Ksp of CaF2 is_______________?

August 30, 2021March 13, 2019 by admin
Solubility of CaF2 is 2.0×10-4 gdm-3 then Ksp of CaF2 is_______________?

A. 4.0 x 10-8
B. 3.2 x 10-11
C. 2.0 x 10-8
D. 4.0 x 10-12

Categories Chemistry Basic Concept, Chemistry Mcqs

Which of the following points are important in connection with equilibrium constant ?

August 30, 2021March 13, 2019 by admin
Which of the following points are important in connection with equilibrium constant ?

A. Kc is constant at given temperature
B. Kc is unaffected by change in concentration of reactants or products
C. Kc indicates the extent of reaction but not about the rate of reaction.
D. All of the above

Categories Chemistry Basic Concept, Chemistry Mcqs
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