Chemistry MCQs

Question:

Tannic acid and gallic acid are used in the preparation of

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A: Blue black ink
B: Printing ink
C: Marking ink
D: Red ink
Answer: A

Question:

Hydrogen is the _____ gas ?

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A: heaviest
B: Heavy
C: lightest
D: light
Answer: C

Question:

Hydrogen atom contains 1 _____ ?

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A: Neutrons
B: electrons
C: protons
D: None of these
Answer: B

Question:

Hydrogen is a very __________ Reducing agent.

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A: good
B: bad
C: slow
D: fast
Answer: A

Question:

_______ reacts with some elements to form binary compounds called Hydrides.

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A: oxygen
B: Hydrogen
C: Halides
D: Oxides
Answer: B

Question:

Mendeleev's periodic table contains _____ horizontal rows called series ?

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A: 12
B: 11
C: 10
D: 9
Answer: A

Question:

Triad means _____ ?

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A: Group of Six similar elements
B: Group of Five similar elements
C: Group of Four similar elements
D: Group of Three similar elements
Answer: D

Question:

The atomic weight of hydrogen is

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A: 1.08
B: 1.800
C: 1.00
D: 1.008
Answer: D

Question:

Hydrogen is a _____ element

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A: S-block
B: P-block
C: D-block
D: F-block
Answer: A

Question:

The first period of the modern periodic table contains total

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A: One element
B: Two elements
C: Three elements
D: Four elements
Answer: B

Question:

The name of C6H14 is

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A: Hexane
B: Decane
C: Propane
D: Heptanes
Answer: A
Chemistry Hamza Khan

Question:

DNA is negatively charged because of the presence of

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A: PO4 ion
B: SO4 ion
C: CO3 ion
D: HCO3
Answer: A
Chemistry Hamza Khan

Question:

Einstein’s famous equation which states that mass and energy are interchangeable is

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A: E = mc2
B: E = cm2
C: M = ec2
D: M = ec2
Answer: A
Chemistry Alina

Question:

Alcoholic ( OH) group can be identified by

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A: FeCl3 Test
B: Esterification Test
C: Toliens Reagent Test
D: Ozonolysis Reaction
Answer: A
Chemistry Alina

Question:

The Density of water is One gram per Centimeter cube at

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A: 60°C
B: 4°C
C: 100°C
D: 0°C
Answer: B
Chemistry Tania

Question:

Diamond is harder than graphite because of

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A: Tetrahedral structure of Diamond
B: Difference in layers of atoms
C: Difference of crystalline structure
D: None of these
Answer: B
Chemistry Tania

Question:

The bond formed by mutual sharing of electron is

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A: Ionic bond
B: Covelant bond
C: Co-ordinate covelant bond
D: N.O.T
Answer: B
Chemistry Tania

Question:

What is the formula of valeric acid

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A: C5H10O2
B: C5H10
C: C6H10O6
D: C2H5
Answer: A
Chemistry rahulkumar

Question:

Which of the following ion formation is always exothermic

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A: Di-negative
B: Uni-negative
C: Uni-positive
D: Di-positive
Answer: B
Chemistry Tania

Question:

Molecular mass of water (18g) means

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A: 1-mole molecules of water
B: 1-gram molecule of water
C: 3-gram atoms
D: All of the above
Answer: D
Chemistry Tania