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

Carbon black is a nanostructured material that is used in tyres of car ____________.

Identify the INCORRECT match.

Select the CORRECT match for both the polymers.

Which of the following does not give yellow solid on treatment with sodium hypoiodlte?

When 4 g of iron is burnt to ferric oxide at constant pressure, 29.28 kJ of heat is evolved. What is the enthalpy of formation of ferric oxide?

(Atomic mass of Fe = 56)

Fehling solution is ____________.

Find the CORRECT match.

Hinsberg's reagent is ______.

In Clemmensen's reaction, ketone gives ____________.

The enthalpy change for two reactions are given by the equations

\[\ce{2Cr_{(s)} + 1.5 O2_{(g)} -> Cr2O3_{(s)}}\];

∆H₁ = −1130 kJ ............(i)

\[\ce{C_{(s)} + 0.5 O2_{(g)} -> CO_{(g)}}\];

∆H₂ = −110 kJ .........(ii)

What is the enthalpy change, in kJ, for the following reaction?

\[\ce{3C_{(s)} + Cr2O3_{(s)} -> 2Cr_{(s)} + 3CO_{(g)}}\]

Which of the following salts do not undergo hydrolysis?

i. CH₃COONa

ii. CuSO₄

iii. NaCl

iv. NH₄NO₃

v. K₂SO₄

Boron has two isotopes ¹⁰B and ¹¹B with atomic masses 10 and 11, respectively. If its average atomic mass is 10.81, the abundance of ¹⁰B is ____________.

Acetone on Clemmensen reduction gives ____________.

Given the bond energies N ≡ N, H – H and N – H bonds are 945, 436 and 391 kJ/mol respectively. The enthalpy of the reaction;

\[\ce{N2_{(g)} + 3H2_{(g)} -> 2NH3_{(g)}}\]

\[\ce{{n} CH2 = CH2 ->[333 K - 343 K][6 - 7 atm, catalyst] X}\]

Which of the following is CORRECT about polymer 'X'?

In which of the following reactions does the heat change represent the heat of formation of water?

In which of the following reactions, ∆H is greater than ∆U?

Compounds of general formula, are called ____________.

\[\begin{array}{cc} \phantom{...}\ce{R}\phantom{....}\ce{OR'}\phantom{}\\ \phantom{}\backslash\phantom{..}/\\ \ce{C}\\ \phantom{}/\phantom{..}\backslash\\ \phantom{...}\ce{H}\phantom{....}\ce{OR'}\phantom{} \end{array}\]

The compound which does NOT undergo haloform reaction is ____________.

Find the CORRECT match.