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Chemistry Past Questions and Answers

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Chemistry Questions

Question 251:

The general formula of an alkyl halide (which represent the halide) is?

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A C<sub style='font-size: smaller;'>n</sub>H<sub style='font-size: smaller;'>2n</sub> - <sub style='font-size: smaller;'>2</sub>X
B C<sub style='font-size: smaller;'>n</sub>H<sub style='font-size: smaller;'>2n</sub> + <sub style='font-size: smaller;'>1</sub>X
C C<sub style='font-size: smaller;'>n</sub>H<sub style='font-size: smaller;'>2n</sub> + <sub style='font-size: smaller;'>2</sub>X
D C<sub style='font-size: smaller;'>n</sub>H<sub style='font-size: smaller;'>2n</sub>X
E C<sub style='font-size: smaller;'>n</sub>H<sub style='font-size: smaller;'>2n</sub> - 1

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Question 252:

The IUPAC name for

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A 1-methlpentane
B 3-methylbutane
C 2-methylbutane
D 1-dimethylpropane
E 2-methylpentane

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Question 253:

An acid is said to be weak if?

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A Its ions are so completely dissociated that they easily drift apart
B The acid is not corrosive
C The acid has low specific gravity
D Its ions move very slowly when in solution
E Its ions are incompletely dissociated

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Question 254:

Which of the following statements is correct during the electrolysis of a caustic soda solution using platinum electrodes?

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A Oxygen gas is given off at the cathode
B Hydrogen gas is given of at the anode
C Sodium metals is deposited at the anode
D Sodium metal is deposited at the cathode
E AAlkalinity at the cathode increases

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Question 255:

An amphoteric oxide is an?

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A Amorphous oxide of a metal
B Amorphous oxide of a non-mental
C Oxide that is insoluble in water
D Oxide that behaves both as a base as well as an acid
E Oxide that loses its oxygen on sublimation

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