MAH-MHT CET (PCM/PCB) entrance exam Question Bank Solutions for Chemistry

The heats of atomisation of PH_3(g) and P₂H_4(g) are 954 kJ mol⁻¹ and 1485 kJ mol respectively. The P-P bond energy in kJ mol⁻¹ is ____________.

The below given molecular geometry corresponds to which of the following molecule?

Identify the INCORRECT statement.

Which of the following statements are FALSE about lanthanoids?

(I) They have lower heat of atomization than transition metals

(II) They are soft metals with silvery white colour and densities of about 7 g cm⁻³.

(III) They react with water to give the metal hydroxide and oxygen gas.

(IV) They form hydroxides, which are covalent and basic.

Which mineral among the following contains vanadium in it?

Which of the following is CORRECT about alkynes?

The designation of a subshell with n = 6 and l = 2 is ____________.

The electronic configuration of transition element 'X' in +3 oxidation state is [Ar] 3d⁴. What is its atomic number?

Which among the following is used in the treatment of cancer?

For a process, entropy change of a system is expressed as ________.

For a reversible spontaneous change, ∆S is ____________.

Which one of the following is an organometallic compound?

Which one of the following orders is CORRECT in case of energy of the given subshells?

P: n = 4; l = 3

Q: n = 5; I = 1

R: n = 5; l = 0

S: n = 4; l = 2

Arrange the following in order of increasing entropy.

I. 1.0 mol H₂O (298 K, 1 atm)

II. 1.0 mol H₂O (270 K, 1 atm)

III. 1.0 mol H₂O (400 K, 1 atm)

How many electrons in ₁₉K have n = 3, l = 1?

The hybridization of the central atom in BF₃, CH₄, NH₃ and BeCl₂ are ____________ respectively.

Which statement(s) is/are CORRECT about applications of lanthanoid metals/ions and their compounds?

(I) The optoelectronics applications use lanthanoid ions as active ions in luminescent materials.

(II) Lanthanoid compounds are used in television tubes.

(III) Lanthanoids are used in hybrid cars, superconductors and permanent magnets.

Which of the following alcohol contains −OH group attached to a sp² hybridised carbon atom?

The reaction in which 2 molecules of chlorobenzene reacts with metallic sodium in presence of dry ether forming diphenyl is an example of ______.

How many gram of sodium (atomic mass 23 u) is required to prepare one mole of ethane from methyl chloride by Wurtz reaction?