Ethylene molecule contains _?

A. Three sigma and three pi bonds

Everyday Science · Atoms, Elements & Compounds · page 9 of 20

Compounds MCQs with Answers

Includes 9 past paper MCQs (marked).

Timed quizzes, instant results, track your progress — free

Practice these MCQs in the app

All Everyday Science chapters

Compounds MCQs (81–90)

10 MCQs with answers and a short one-liner. Hide answers to test yourself.

Past paper MCQs in this chapter · See all past papers

Answers and one-liners are hidden. Tap an option to check that question, or show all.

81.
Organic compound Cholesterol is ?
Correct Answer: C. Steroid
One-liner
Cholesterol is a steroid, a type of lipid molecule that serves as a structural component of cell membranes and a precursor for hormones.
82.
The individual chemical property of amino acid is determined by which of the following group?
Correct Answer: C. Variable group (R group)
One-liner
The individual chemical property of an amino acid is determined by its variable group (R group).
83.
Which one is more acidic? Ethane thiol, Ethanol, Both A and B, None of these
Correct Answer: A. Ethane thiol
One-liner
Ethane thiol is more acidic than ethanol because the S–H bond is weaker than the O–H bond, making proton donation easier.
84.
A carbohydrate that cannot be acid hydrolyzed is called _?
Correct Answer: A. Monosaccharides
One-liner
A carbohydrate that cannot be acid hydrolyzed is called monosaccharides because they are the simplest form of sugars and cannot be broken down further.
85.
Ethylene molecule contains _?
Correct Answer: D. Five sigma and one pi bond
One-liner
Ethylene (C₂H₄) contains five sigma and one pi bond.
86.
What is the IUPAC name of the compound CH₃(CH₂)₄CH(CH₃)₂?
Correct Answer: A. 2-methylheptane
One-liner
The IUPAC name of CH₃(CH₂)₄CH(CH₃)₂ is 2-methylheptane.
87.
All of the following are insoluble in water except?
Correct Answer: C. Glucose
One-liner
Glucose is soluble in water, whereas starch, cellulose, and chalk are insoluble in water.
88.
The structure of [Ni(CN)4]2- is _.
Correct Answer: A. Square planar
One-liner
The structure of [Ni(CN)4]2- is square planar due to dsp2 hybridization of the central Ni2+ ion.
89.
Which of the following is an example of a substituent group that releases electrons to the benzene ring?
Correct Answer: B. -NH₂
One-liner
The -NH₂ (amino) group is an electron-releasing substituent that donates electrons to the benzene ring through its lone pair on nitrogen.
90.
How many nitrogen atoms are present in one molecule of nitrous oxide (N2O)?
Correct Answer: B. 2
One-liner
One molecule of nitrous oxide (N₂O) contains 2 nitrogen atoms.

Previous chapter: Some Important Elements Next chapter: Some Important Compounds

Compounds MCQs with Answers

Compounds MCQs (81–90)

Subjects

Exams

Platform

Legal