NTS Chemistry Mcqs
Our collections of Multiple choice questions and answers focuses on Recent past NTS papers based on chemistry. These questions are chosen from a collection of most authoritative and best reference books on Chemistry. Our aim is to prepare an individual for competitive exams like NTS. One should practice our Mcqs to assimilate knowledge on Chemistry comprehensively.
1024. Enzymes from the same organism which catalyze same reaction but are chemically and physically distinct from each other are called______________?
Oxidoreductases
Hydrolases
Isoenzymes
Isomerases
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1025. When chlorine is passed through hot solution of caustic soda the reaction is said as___________________?
Displacement
Reduction
Disproportionation reaction
Double displacement reaction
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1026. Which one of the following alcohols will be formed when ethyl magnesium bromide reacts with acetone ?
primary alcohol
secondary alcohol
tertiary alcohol
dihydric alcohol
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1027. Mass spectrometer is used to determine Mass number of isotopes and___________________?
Atomic number
Relative abundance
Electronic configuration
All of the above
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1028. The phenomenon in which a compound exists in two or more crystalline forms is called ________________?
Isomorphism
Polymorphism
Anisotropy
Allotropy
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1029. Halides in which halogen atoms act as a bridge between two atoms of the other element are called___________________?
Covalent halides
Electronegative halides
Polymeric halides
Polymeric hydrides
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1030. The mechanism by which the genetic information can be duplicated is called_________________?
Duplication
Transcription
Replication
Mutation
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1031. Which one does not exhibit aldol condensation___________________?
Ethanal
Acetone
Benzaldehyde
Butanone
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1032. The test which is used for the identification of amino-acids is_________________?
Ninhydrin test
Molisch test
Biuretic test
Benedict test
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1033. Which one of the following set of raw material is most suitable for manufacture of urea ?
CH4 N2 and CO2
H2 N2 and CO
H2 CO2 and H2O
H2O N2 and H2
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1034. A malleable solid is one which can be_________________?
Converted into wires
Converted into thin sheets
Melted easily
All of the above
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1035. Which of following is not a base______________?
KOH
NH3
PH3
BF3
1036. Coal is produced after a long time decay of_________________?
animals
fossils
wood
all of the above
1037. The degree of dissociation of week electrolyte increases as________________?
Pressure increases
Dilution decreases
Dilution increases
None
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