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Basic Chemistry Multiple Choice Questions With Answers MCQs
Q.1: Which one of the following is an inorganic fertilizer ?
- manure
- urea
- ammonium nitrate
- All
C
Q.2: Which statement is incorrect about catalyst----------- ?
- it is used in smaller amount
- decrease activation energy
- specific in action
- it affects specific rate constant
D
Q.3: Which substance can be used for disinfecting water ?
- KMnO4
- Alums
- Ozone
- All
A
Q.4: Rate of reaction when concentration of reactants are taken as unity is called--------- ?
- Arrhenius constant
- Molecularity
- Specific rate constant
- Ideal rate constant
C
Q.5: Requirement of macronutrient per acre of the land is--------- ?
- 5 to 200 kg
- 20-200 kg
- 200-400 kg
- 30-400 kg
A
Q.6: A polymer in which three different monomers combine called-------- ?
- Copolymer
- Terpolymer
- Homopolymer
- Biopolymer
B
Q.7: Which one of the following aqueous solutions will be basic ?
- NaCI
- Na2SO4
- Na2CO3
- FeCl3
C
Q.8: The percentage of nitrogen in urea is-------- ?
- 36%
- 46%
- 56%
- 66%
B
Q.9: The composition of mixture of clay and lime stone in the raw for cement material is --------- ?
- 75% lime stone and 25% clay
- 25% lime stone and 75% clay
- 15% lime stone and 55% clay
- 55% lime stone and 15% clay
A
Q.10: When sparingly soluble salt is in equilibrium with molar concentration of its oppositely charged ion when the product is called------- ?
- common ion effect
- solubility product
- dissociation constant
- dissociation constant for an acid
B
Q.11: A single chlorine free radical can destroy how many ozone molecules ?
- 10
- 100
- 10000
- 100000
D
Q.12: Conjugated base of a weak acid is--------- ?
- weak
- strong
- moderately weak
- unstable
B
Q.13: Which of the following solutions of H2SO4 is more concentrated ?
- 1 Molar solution
- 1 molal solution
- 1 normal solution
- all have same concentration
A
Q.14: Which one of the following makes the bulk of hydrospheres content ?
- oceans
- glaciers AND icecaps
- fresh water lakes and ponds
- All have equal distribution
A
Q.15: Which of the following is not a secondary pollutant-------- ?
- ozone
- carbonic acid
- sulphuric acid
- carbon dioxide
D
Q.16: When the reaction completes in more than one steps rate of reaction will be determined by-------- ?
- Fast step
- Slowest step
- All steps
- Molecularity of the reaction
B
Q.17: For 3rd order reaction the hhalf life is inversely proportional to initial concentration of reactants------- ?
- Single
- Square
- Cube
- Raise to power four
B
Q.18: The fertility of the soil is improved by----------- ?
- Rotation of the crops
- Adding lime to the acid salts
- Adding manure and growing legumes
- All
D
Q.19: The specific rate constant of a first order reaction depends on the------- ?
- Time
- Concentration of the reactant
- Temperature
- Concentration of the product
C
Q.20: Which of the following air pollutants is more dangerous for ozone layer ?
- CFC
- CO2
- CO
- Oxides of nitrogen
A
