Question Detail

Which element found in all organic compounds ?

carbon
nitrogen
calcium
none of them

Answer: Option A

Similar Questions :

1. What is laughing gas ?

nitrous oxide
nitric oxide
nitrogen oxide
nitrogen peroxide

Answer: Option A

2. Which is also called Stranger Gas ?

Xenon
Neon
Argon
Nitrous oxide

Answer: Option A

3. The most abundant element in the earth's crust is ?

Aluminium
Nitrogen
Silicon
Oxygen

Answer: Option D

4. Identify the wrong statement in the following

Atomic radius of the elements increases as one moves down the first group of the periodic table
Atomic radius of the elements decreases as one moves across from left to right in the 2nd period of the
Amongst isoelectronic species, smaller the positive charge on the cation, smaller is the ionic radius
Amongst isoelectronic species, greater the negative charge on the anion, larger is the ionic radius

Answer: Option C

5. Which of the following gas is used in cigarette lighters ?

Butane
Propane
Methane
Ethane

Answer: Option A

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