In carbon dioxide (CO₂), the current process for determining the formula is which one of the following?

A. Cross the valencies and simplify

D. Divide by the molecular weight

Everyday Science · Atoms, Elements & Compounds · page 7 of 20

Compounds MCQs with Answers

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Compounds MCQs (61–70)

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61.
Organic compounds are insoluble in _?
Correct Answer: D. Water
One-liner
Organic compounds are generally insoluble in water because most organic molecules are non-polar, while water is a polar solvent.
62.
Some amino acids are most important because they are the final product of hydrolysis of peptide and protein and they are ?
Correct Answer: B. α-amino acid
One-liner
The amino acids obtained as the final product of hydrolysis of peptides and proteins are α-amino acids.
63.
In carbon dioxide (CO₂), the current process for determining the formula is which one of the following?
Correct Answer: A. Cross the valencies and simplify
One-liner
The formula of carbon dioxide (CO₂) is determined by crossing the valencies and simplifying.
64.
An example of a nonstoichiometric compound is ?
Correct Answer: C. Fe₂O₄
One-liner
An example of a nonstoichiometric compound is Fe₂O₄ (magnetite), where the ratio of elements does not follow simple whole-number proportions.
65.
Which of the following are isomers of each other?
Correct Answer: C. Glucose and Fructose
One-liner
Glucose and Fructose are isomers of each other, both having the molecular formula C₆H₁₂O₆ but different structural arrangements.
66.
A formula that gives only the simplest relative number of each type of atoms present in a molecule is called?
Correct Answer: B. Empirical formula
One-liner
The formula that gives only the simplest whole-number ratio of atoms in a molecule is called the empirical formula.
67.
The Aluminum oxide is ?
Correct Answer: C. Amphoteric oxide
One-liner
Aluminum oxide is an amphoteric oxide because it reacts with both acids and bases to form salts and water.
68.
How many oxygen atoms are present in a molecule of carbon dioxide (CO2)?
Correct Answer: B. 2
One-liner
A molecule of carbon dioxide (CO2) contains 2 oxygen atoms.
69.
Organic compounds are generally soluble in _ solvents.
Correct Answer: B. Non-polar
One-liner
Organic compounds are generally soluble in non-polar solvents due to the principle "like dissolves like."
70.
Which compound will not show geometrical isomerism?
Correct Answer: D. Pent-1-ene
One-liner
Pent-1-ene does not show geometrical isomerism because the terminal carbon of the double bond has two identical hydrogen atoms attached.

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Compounds MCQs with Answers

Compounds MCQs (61–70)

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