List of top Chemistry Questions

$H _{2} O$ is liquid while $H _{2} S$ is a gas due to
Dual nature of particle was given by:
Which of the following molecules has trigonal planar geometry?
An emulsifier is a substance which
${4K2Cr2O7 ->[Heat] 4K2CrO4 + 3O2 + X. }$ In the above reaction X is:
Aluminium reacts with caustic soda to form:
Which one of the following is a chain growth polymer
A sequence of how many nucleotides in messenger RNA makes a codon for an amino acid
Which of the following does not have a metal-carbon bond
If the bond energies of H–H, Br – Br and H –Br are 433, 192 and 364 kJ mol–1 respectively the ∆Hº for the reaction H2(g) + Br2(g) \(\rightarrow\)2HBr(g)
Which of the following forms cationic micelles above certain concentration ?
Lanthanoids are
Which of the following is considered to be an anticancer species
Considering entropy (S) as a thermodynamic parameter, the criterion for the spontaneity of any process is
2 - Acetoxy benzoic acid is used as an :
The pH value of an acid is $5$ and its concentration is 1 M. What is the value of $ K_{a} $ for the acid?
Arrange in order of increasing acidic strength
Volume of $CO_{2}$ obtained from complete decomposition of $20 \,g$ $CaCO_{3}$ at STP is:
pH-scale was proposed by:
When a mixture of methane and oxygen is passed through heated molybdenum oxide, the main product formed is :
Which of the following solutions will have the highest boiling point?
Maximum freezing point falls in
NH
The reaction,$2SO_{2(g)} + O_{2(g)} \leftrightharpoons 2SO_{3(g)}$ is carried out in a $1\, dm^3$ vessel and $2 \,dm^3$ vessel separately. The ratio of the reaction velocities will be :
An artificial radioactive isotope gave ${^{14}_{7}N}$ after two successive $\beta$ -particle emissions. The number of neutrons in the parent nucleus must be :