List of top Chemistry Questions

Which of the following contains 10 electrons, 11 protons, and 12 neutrons?
The minimum number of quantum numbers required to specify an orbital in an atom is

Match List I with List II:

The wave number of a photon is \( 10^4 \, cm^{-1} \). What is its energy in joules? Given: \[ h = 6.6 \times 10^{-34} \, Js, \quad c = 3 \times 10^{10} \, cm/s, \quad \tilde{\nu} = 10^4 \, cm^{-1} \]
Identify the correct statement related to amino acids
Which of the following bases are present both in DNA and RNA?
bases are present both in DNA and RNA
The source of vitamin, whose deficiency causes scurvy is:
From the following, number of fat soluble and water soluble vitamins respectively are A D C B$_1$ K B$_6$
Which of the following is not correctly matched for enzymatic reactions?
A vitamin (X) is water soluble but can be stored in the body. Deficiency of X causes which disease?

Match the following

List – IList – II
A. Beri BeriI. Riboflavin
B. ScurvyII. Thiamine
C. CheilosisIII. Pyridoxine
D. RicketsIV. Ascorbic acid
 V. Vitamin D
Sulphur containing amino acids of the following are
A. Serine
B. Cysteine
C. Lysine
D. Methionine
Nucleotides in RNA are joined by which of the following phosphodiester linkages?
In amylopectin, branching occurs by which of the glycosidic linkage?
Given below are two statements
Assertion (A): Hydrolysis of sucrose results in change in the optical rotation from dextro (+) to laevo (–)
Reason (R): Both the products from the hydrolysis are leavorotatory
The correct order of bond angles of H$_2$S, NH$_3$, BF$_3$, and SiH$_4$ is
The hybridization and number of lone pair of electrons on central atom of SF$_4$ respectively are
Given below are two statements
Assertion (A): Ionic compounds are formed by non-directional bonds
Reasoning (R): They are soluble in nonpolar solvents
The correct answer is
Match the following
hybridisation
The hybridization of central atom of ClF$_3$, NH$_3$, SO$_3$ are respectively
Observe the following species: AlCl$_3$, NH$_3$, H$^+$, Co$^{3+}$, $^-$OH, Mg$^{2+}$, BF$_3$, Cl$^-$ How many Lewis acids are present in the above list?
Arrange the hydrides NH$_3$, HF, H$_2$O, HCl in the increasing order of their boiling points
The correct order of C − O bond length in CO, CO2−3, CO2 is
The P − P bond angle in P4 and S − S bond angle in cyclo S8 molecule are respectively
Which of the following are not in accordance with the property mentioned against them? I. \( F_2>Cl_2>Br_2>I_2 \): Oxidising power
II.\( MI>MBr>MCl>MF\): Ionic character of metal halide
III. \( F_2<Cl_2<Br_2<I_2 \): Bond dissociation enthalpy
IV. \( HI<HBr<HCl<HF \): Hydrogen-halogen bond strength