Dihedral angle of least stable conformer of ethane is:

Noble gases are named because of their inertness towards reactivity. Identify an incorrect statement about them.

The major product of the following chemical reaction is:

A particular station of All India Radio, New Delhi, broadcasts on a frequency of $1368$ kHz (kilohertz). The wavelength of the electromagnetic radiation emitted by the transmitter is:$\newline$(Speed of light, $c = 3.0 \times 10^8$ m/s)

The incorrect statement among the following is:

Right option for the number of tetrahedral and octahedral voids in hexagonal primitive unit cell are:

Identify the compound that will react with Hinsberg’s reagent to give a solid which dissolves in alkali.

Which of the following reactions is the metal displacement reaction? Choose the right option.

Given below are two statements:$\newline$Statement I: Aspirin and Paracetamol belong to the class of narcotic analgesics.$\newline$Statement II: Morphine and Heroin are non-narcotic analgesics.$\newline$In the light of the above statements, choose the correct answer from the options given below.

What is the IUPAC name of the organic compound formed in the following chemical reaction?$$Acetone$\xrightarrow[(ii)\ H_2O,\ H^+]{(i)\ C_2H_5MgBr, dry Ether}$

Statement I: Acid strength increases in the order given as$\newline HF << HCl << HBr << HI. \newline$Statement II: As the size of the elements F, Cl, Br, I increases down the group, the bond strength of HF, HCl, HBr, and HI decreases and so the acid strength increases.$\newline$

Which one among the following is the correct option for the right relationship between$C_P$ and $C_V$ for one mole of an ideal gas?

Match List - I with List - II.

The following solutions were prepared by dissolving 10 g of glucose$(C_6H_{12}O_6)$in 250 ml of water$(P_1), 10 g$

Which one of the following methods can be used to obtain highly pure metal which is liquid at room temperature?

Tritium, a radioactive isotope of hydrogen, emits which of the following particles?

The correct option for the number of body-centered unit cells in all 14 types of Bravais lattice unit cells is:

The major product formed in dehydrohalogenation reaction of 2-Bromo pentane is Pent-2-ene. This product formation is based on?

The maximum temperature that can be achieved in a blast furnace is:

The molar conductance of$NaCl, HCl, CH_3COONa$ at infinite dilution are $126.45, 426.16,$ and $91.0$

Ethylene diaminetetraacetate (EDTA) ion is:

The structures of beryllium chloride in solid state and vapor phase, are:

The correct structure of 2,6-Dimethyl-dec-4-ene is:

The right option for the statement “Tyndall effect is exhibited by”, is:

Which one of the following polymers is prepared by addition polymerisation?

The RBC deficiency is deficiency disease of:

The correct sequence of bond enthalpy of ‘C–X’ bond is:

An organic compound contains 78% (by wt.) carbon and remaining percentage of hydrogen. The right option for the empirical formula of this compound is:$\newline$(Atomic wt. of C is 12, H is 1)

Among the following alkaline earth metal halides, one which is covalent and soluble in organic solvents is:

BF$_3$ is planar and electron-deficient compound. Hybridization and number of electrons around the central atom, respectively are:

The pK$_b$ of dimethylamine and pK$_a$ of acetic acid are $3.27$ and $4.77$

Choose the correct option for graphical representation of Boyle’s law, which shows a graph of pressure vs. volume of a gas at different temperatures:

For a reaction $A \to B,$ enthalpy of reaction is $-4.2$ kJ mol$^{-1}$ and enthalpy of activation is $9.6$

The compound which shows metamerism is:

Zr (Z=40) and Hf (Z=72) have similar atomic and ionic radii because of:

Match List - I with List - II.

The reagent ‘R’ in the given sequence of chemical reaction is:

From the following pairs of ions which one is not an iso-electronic pair?

The slope of Arrhenius Plot $\ln k$ vs. $\frac{1}{T}$ of first-order reaction is $-5 \times 10^3$

For irreversible expansion of an ideal gas under isothermal condition, the correct option is:

In which one of the following arrangements the given sequence is not strictly according to the properties indicated against it?

The intermediate compound ‘X’ in the following chemical reaction is:

The correct option for the value of vapor pressure of a solution at $45^\circ C$ with benzene to octane in molar ratio $3:2$ is:$\newline$(At $45^\circ C,$

The molar conductivity of $0.007$ M acetic acid is $20$ S cm$^2$ mol$^{-1}.$ What is the dissociation constant of acetic acid?