Which one among the following is the heaviest 1 mole of water molecules 1 mole o

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Question
Which one among the following is the heaviest
Options
A. 1 mole of water molecules
B. 1 mole of ammonia molecules
C. 1 mole of sodium atoms
D. 1 mole of hydrogen molecules

Correct Answer

1 mole of sodium atoms

Chemistry problems

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1. Heated saw dust catches fire when a drop of concentrated nitric acid is added to it. This is due to
Options
A. dehydration
B. oxidation
C. reduction
D. dehydrogenation

2. An element which is preserved under water is
Options
A. sodium
B. sulphur
C. red phosphorus
D. white phosphorus

7. Silver Mirror test is given by which one of the following compounds? 1. Benzophenone 2. Acetaldehyde 3. Acetone 4. Formaldehyde
Options
A. Only 1
B. Only 2
C. 1 and 3
D. 2 and 4

Correct Answer: 2 and 4

Explanation:

Both Formaldehyde and Acetaldehyde will give this test

$H C H O \overset{[A g (N H_{3})_{2}^{+}]}{?} \overset{A g}{S i l v e r m i r r o r} + O r g a n i c c o m p o u n d$

$C H_{3} - C H O \overset{[A g (N H_{3})_{2}^{+}]}{?} \underset{S i l v e r m i r r o r}{A g} + O r g a n i c c o m p o u n d$

9. Cutting and peeling of onion brings tears to the eyes because of the presence of _____ ?
Options
A. Amino acid
B. Sulfur
C. Carbon
D. Fat

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