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Identify the ester shown
The number of electrons in the L shell of C is
----------------------------is a theory made by the Scientist Berzelius in 1809 which assumed that organic compounds are only formed in living cells and it is impossible to prepare them in laboratories.
Vital Force Theory
Star Force Theory
Living Force Theory
Organic Force Theory
Which among these is an aromatic hydrocarbon?
The chemical formula of the next homologue of ethyne is
The IUPAC name of the shown compound is:
A: The middle zone of candle flame is yellow in colour.
R: Under the heat, some of the wax (paraffin) breaks down into tiny particles of carbon, which is called soot. These particles are heated up under the high temperature and glow with a bright yellow light. This makes candlelight yellow.
Both, A and R, are true and R is the correct explanation of A
Both, A and R, are true but R is not the correct explanation of A
A is true but R is false
A is false but R is true
A flame is only produced when gaseous substances burn
When we heat copper wire in the flame of a gas stove what is its colour?
Which has higher melting point?
The correct formula of formaldehyde is given by
none of these
Which of the following gas is known as illuminating gas ?
Ketones are compounds
containing – OH group attached to alkyl group
containing – C=O group attached to alkyl group
containing –CHO group attached to alkyl group
containing – COOH group attached to alkyl group
Water gas consists of
water vapour and dust
a mixture of carbon monoxide and hydrogen
a mixture of carbon monoxide and nitrogen
water vapour and methane
The bond angle in methane is