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MCQs of chemistry 1st year chapter organic questions and answers solutions. MCQs for exams tests questions in quiz tests of chemistry. Solved Dogar brothers multiple choice questions for educators teaching jobs of chemistry subject. NCERT Chemistry Science GSEB All Solved Objective Type MCQs Quiz Tests.
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Online Objective Type Quiz For NCERT Chemistry Test
Q.1: Carbohydrates are polyhydroxy compounds of-------- ?
- Glucose
- Glyceraldehydes
- Oligosaccharides
- Aldehydes and ketones
D
Q.2: All proteins yield ----------- upon complete hydrolysis ?
- Nitrogen
- Amino acids
- Carbon and hydrogen
- Sulphur
B
Q.3: Orgosterol is-------------- ?
- Orgocalciferol
- Vitamin D2
- Sterol
- all of the above
C
Q.4: Triglycerides are easily hydrolyzed by enzymes called--------- ?
- Lyases
- Ligases
- Lipases
- Hydrolases
C
Q.5: The mechanism by which the genetic information can be duplicated is called--------- ?
- Duplication
- Transcription
- Replication
- Mutation
C
Q.6: Any process of chemical decay of metals due to the action of surrounding medium is called--------- ?
- activation
- enameling
- corrosion
- coating
C
Q.7: Hydrolysis of an oligosaccharide in the presence of acid yields--------- ?
- one monosaccharide unit
- No monosaccharide unit
- 2-9 monosaccharide unit
- many monosaccharide
C
Q.8: Which of the following is typical transition metal ?
- Sc
- Y
- Cd
- Co
D
Q.9: When a compound of transition element is dissolved in a solution of salt then it produces--------- ?
- simples ions
- complex ions
- double salts
- strong anions
B
Q.10: The yellow colour in photochemical smog is due to presence of---------- ?
- dinitrogen oxide
- nitrogen dioxide
- chlorine gas
- chlorine dioxide
B
Q.11: Which of the following is used as water disinfectant to avoid the formation of toxic compounds------ ?
- Cl2
- O3
- ClO2
- both B AND C
D
Q.12: When common salt is dissolved in water ?
- Boiling point of water decrease
- Boiling point of water increase
- Boiling point of water remains same
- None of the above
B
Q.13: The relative lowering of vapour pressure is----------- ?
- equal to the mole fraction of solvent
- equal to the mole fraction of solute
- directly proportional to the mole fraction of solute
- both B AND C
B
Q.14: Solution of Na2SO4 will be---------- ?
- basic
- acidic
- neutral
- cannot be presicted without data
C
Q.15: Which of the following substance do not show continuous solubility curve ?
- KCIO4
- Na2SO4. 10H2O
- K2Cr2O7
- PbCl2
B
Q.16: If the volume of solution is equal to sum of volumes of its all components then the solution-------- ?
- will be an ideal solution
- will be non-ideal solution
- will show deviations from Raoults law
- both b AND c
A
Q.17: A process controlled by Distributive law is----------- ?
- Crystallization
- Sublimation
- Solvent extraction
- Filtration
C
Q.18: Which acid is the manufacture of synthetic rubber ?
- Acetic acid
- Formic acid
- Carbonic acid
- Benzoic acid
A
Q.19: Which type of bond is formed by overlap of p orbitals ------- ?
- Pi
- Sigma
- Both
- Neither
C
Q.20: A specie with maximum number of unpaired electrons ?
- F
- H2O
- HF
- NH-2
D