0
Q:

The molecular formula of Propane is

A) C2H6 B) C4H10
C) C3H8 D) CH4

Answer:   C) C3H8



Explanation:
Subject: Chemistry
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Q:

Name the reddish brown gas evolved when Lead Nitrate is heated strongly.

A) Nitric oxide B) Nitrogen di oxide
C) Di Nitrogen Oxide D) Nitrogen pentoxide
 
Answer & Explanation Answer: B) Nitrogen di oxide

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Q:

Which of the following compounds has a double bond?

A) Acetylene B) Ethene
C) Ethane D) Methane
 
Answer & Explanation Answer: B) Ethene

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Q:

Which is the first metallic element in the Modern Periodic Table?

A) Li B) Na
C) He D) H2
 
Answer & Explanation Answer: A) Li

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Q:

Which of the following causes damage to bridges, iron railings and all objects made of metals?

A) Reduction B) Rancidity
C) Acidity D) Corrosion
 
Answer & Explanation Answer: D) Corrosion

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Q:

Which of the following scientists had done some calculations for the fifth state of matter?

A) Satyendra Nath Bose B) CV Raman
C) Vikram Sarabhai D) Homi Bhabha
 
Answer & Explanation Answer: A) Satyendra Nath Bose

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Q:

Biogas is produced from biomass by

A) destructive distillation B) fractional distillation
C) anaerobic fermentation D) dry distillation
 
Answer & Explanation Answer: C) anaerobic fermentation

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Q:

Which of the following is an unsaturated Hydrocarbon?

A) Butane B) Pentane
C) Ethyne D) Propane
 
Answer & Explanation Answer: C) Ethyne

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Q:

Name the Russian chemist who stated that the properties of elements are a periodic function of their atomic masses?

A) Markovnikov B) Zelinsky
C) Mendeleev D) Zaitsev
 
Answer & Explanation Answer: C) Mendeleev

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