Which of the following group is NOT Dobereiner Triads?
Biogas is produced from biomass by
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Which of the following is an unsaturated Hydrocarbon?
Name the Russian chemist who stated that the properties of elements are a periodic function of their atomic masses?
Saturated carbon compounds can form which types of chain structures?
I. Straight chain
II. Branched chain
An atom can achieve octet by ______.
I. sharing electron
II. gaining electron
III. losing electron
Which substance is produced when alcohol is added with petrol and used as a fuel?
Isotopes have ______.
I. similar physical quantities and different chemical properties
II. different physical properties
III. similar chemical properties
Which of the below options is called a laughing gas?