Chemistry MCQs | Solved Organic Chemistry Online Test

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Chemistry Exam Questions Answers Objective Type Solutions

Q.1: Which has maximum oxidation number ?

1. N
2. Cr
3. S
4. Mn

D

Q.2: In electrolytic cell electricity carries------- ?

1. spontaneous reaction
2. non-wpontaneous reaction
3. neutralization
4. all of above

B

Q.3: Non-stoichiometric compounds of transition elements are called---------- ?

1. hydrates
2. hydrides
3. binary compounds
4. interstitial compounds

D

Q.4: Geometry of the complex compounds usually depends upon --------- ?

1. type of ligands
2. types of hybridization in the elements of ligands
3. hybridization of central metal
4. All of above

C

Q.5: Voltaic cell can be recharged by------- ?

1. by addition of fresh solution
2. by replacing external circuit with external source of electricity
3. by removal of solution
4. by heating it

B

Q.6: Number of moles in 1 kg of solvent is called-------- ?

1. normality
2. molarity
3. molality
4. mole fraction

C

Q.7: Lead accumulators are--------- ?

1. secondary cell
2. primary cell
3. voltaic cell
4. both A AND C

D

Q.8: Group VIB of transition elements contains------- ?

1. Zn Cd Hg
2. Fe Ru Os
3. Cr Mo W
4. Mn Te Re

C

Q.9: Percentage of sulfuric acid in lead accumulator is-------- ?

1. 40%
2. 25%
3. 30%
4. 50%

C

Q.10: Electrode potential of Zn is--------- ?

1. oxidation
2. reduction
3. oxidation-reduction
4. depends on the nature of the coupled electrode

D

Q.11: When an active metal like Al comes in contact with less active element like Cu then it produces------ ?

1. dry cell
2. galvanic cell
3. electrolytic cell
4. A and B

B

Q.12: Compounds attracted by applied strong magnetic field are called------- ?

1. diamagnetic
2. paramagnetic
3. good conductor
4. ferromagnetic

B

Q.13: The central atom along with ligands is called------- ?

1. complex ion
2. coordination sphere
3. ligand
4. complex compound

B

Q.14: 1 molar solution of glucose in water contains weight of glucose------- ?

1. 180g/dm3
2. 170g/dm3
3. 190g/dm3
4. 195g/dm3

A

Q.15: Which of the following gases is the main cause of acid rain ?

1. CO
2. NO2
3. both a AND b
4. none of the above

B

Q.16: Which one of the following salt does not hydrolyzed------ ?

1. Na2SO4
2. AlCl3
3. CuSO4
4. NH4Cl

A

Q.17: A single chlorine free radical can destroy how many ozone molecules ?

1. 10
2. 100
3. 10000
4. 100000

D

Q.18: The component of solution which is in smaller amount is called---------- ?

1. solvent
2. solute
3. phase
4. ion

B

Q.19: Which of the following solutions of H2SO4 is more concentrated ?

1. 1 Molar solution
2. 1 molal solution
3. 1 normal solution
4. all have same concentration

A

Q.20: Homogeneous mixture of two or more than two compounds is called-------- ?

1. solution
2. compound
3. radical
4. ion

A