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Important Questions

Hydrocarbons

Telangana Open School (TOSS) · Class 12 · Chemistry

Most important questions from Hydrocarbons for Telangana Open School (TOSS) Class 12 Chemistry board exam 2026. MCQs, short answer, and long answer questions with marks.

52 questions30 flashcards5 concepts

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52 Questions·
multiple choicemultiple correcttrue false

Sample Questions

1multiple choice
1 marks

Which hydrocarbon is used as LPG?

Show answer

Propane and Butane

LPG (Liquefied Petroleum Gas) mainly consists of propane and butane, which are alkanes.

2multiple choice
1 marks

What is the physical state of alkanes with 1 to 4 carbon atoms at room temperature?

Show answer

Gas

Alkanes with 1 to 4 carbon atoms (methane, ethane, propane, butane) are gases at room temperature.

3multiple choice
1 marks

Which of the following is a saturated hydrocarbon?

Show answer

Ethane

Ethane (C₂H₆) has only single bonds between carbon atoms, making it saturated.

4multiple choice
1 marks

What is the product of complete combustion of methane?

Show answer

CO₂ and H₂O

Complete combustion of hydrocarbons in excess oxygen produces carbon dioxide and water.

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Frequently Asked Questions

What are the important topics in Hydrocarbons for Telangana Open School (TOSS) Class 12 Chemistry?
Hydrocarbons covers several key topics that are frequently asked in Telangana Open School (TOSS) Class 12 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Hydrocarbons — Telangana Open School (TOSS) Class 12 Chemistry?
Understand the core concepts first, then work through the 52 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.
How many important questions are there in Hydrocarbons?
There are 52 practice questions available for Hydrocarbons. These cover multiple question types including MCQs, short answer, and long answer questions.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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