List of top Chemistry Questions

The common components of photochemical smog are:
At 300 K, the vapour pressure of liquids A and B are 600 and 500 mm of Hg respectively. Two moles of A and three moles of B are mixed. The mole fractions of A and B in vapor state are respectively
Identify the correct statement about the crystal defects in solids:

The correct IUPAC name of the given compound is:

Observe the following statements
Statement I : Ca(OH)$_2$; is used in white wash
Statement 11 : \(CaCO_3\) is used as mild abrasive in tooth paste
Identify the pair in which the difference in bond order value is maximum.

Observe the following reactions (not balanced):

Cl2 + NaOH → NaCl + X + H2O

Cl2 + NaOH → NaCl + Y + H2O

The amino acid obtained from cheese is

What is 'C' in the given sequence of reactions?

The number average molecular weight (M\(_n\)) of a polymer is 1500. In this polymer, 800 molecules of molar mass 1000, 100 molecules of molar mass 2000 and x molecules of molar mass 5000 are present. What is the value of x?
Phosphodiester linkage that joins nucleotides together is present between which carbons of pentose sugar?
Which of the following is used in liquid detergents?
The number of activating and deactivating groups of the following are respectively: \[ -OCH_2CH_3, -COCH_3, -NHCOCH_3, -COOCH_3, -SO_3H \]

At 400 K, the following graph is obtained for \( x \) moles of an ideal gas. \( x \) is equal to (R = gas constant, P = pressure, V = volume)
 

Which of the following does not evolve \( O_2 \) when made to react with water?

Assertion (A): Chlorobenzene is not formed in the reaction of phenol with thionyl chloride. Reason (R): In phenol, carbon-oxygen bond has partial double bond character.

The IUPAC names of the compounds A and B respectively are

 

An element with molar mass \( 2.7 \times 10^{-2} \) kg mol\(^{-1}\) forms a cubic unit cell with an edge length of 405 pm. If its density is \( 2.7 \times 10^3 \) kg m\(^{-3}\), the number of atoms present in one unit cell is: (Given: \( N_A = 6.023 \times 10^{23} \) mol\(^{-1}\))
The number of molecules with electrophilic centres in the following is CH\(_3\)CH\(_2\)Br, CH\(_3\)COCH\(_3\), CH\(_3\)CH\(_2\)CN, (CH\(_3\))\(_2\)Cd
In which of the following, ions are correctly arranged in the increasing order of oxidizing power?

The effects that aspirin can produce in the body are: 

 
 

The incorrect rule regarding the determination of significant figures is:
At 400 K, the following graph is obtained for \( x \) moles of an ideal gas. \( x \) is equal to (R = gas constant, P = pressure, V = volume)
x moles of an ideal gas
An alkene ‘X’ (C\(_4\)H\(_8\)) does not exhibit cis/trans isomerism. Reaction of ‘X’ with Br\(_2\)/CCL\(_4\), followed by reaction with reagent ‘Y’ gave ‘Z’ (C\(_6\)H\(_6\)). What are ‘Y’ and ‘Z’ respectively?
The correct statements of the following are: A) Aniline forms a stable benzene diazonium chloride at 285K.
B) N - Phenylethanamide is less reactive towards nitration than aniline.
C) p - CH\(_3\)C\(_6\)H\(_4\)COCl is Hinsberg reagent.