Which of the following metals reacts slowly with cold water?
Iron
Silver
Calcium
Pottassium
Correct answer is C
Calcium reacts very slowly with cold water
A solid with higher melting and boiling points is likely to be?
Covalent compound
A Dative compound
An Electrovalent compound
A Non-metal
Correct answer is C
Ionic Compounds / Electrovalent compounds Have A High Melting Point and High Boiling Point.
The periodic table is an arrangement of elements according to their?
Oxidation number
Atomic number
Mass number
Number of neutrons
Correct answer is B
Elements are arranged in order of increasing atomic number
Which of the following will give a precipitate with an aqueous solution of copper (I) chloride?
But-2-ene
But-1-ene
But-2-yne
But-1-yne
Correct answer is D
No explanation has been provided for this answer.
A secondary alkanol can be oxidized to give an?
alkanone
alkyne
alkanoic acid
alkanal
Correct answer is A
Secondary alkanols (alcohols) can be oxidised to alkanones (ketones)