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

Which of the following statements is INCORRECT for Dalton's atomic theory?

Which of the following is/are CORRECT?

(I) Acidic character: H₂S < H₂Se < H₂Te

(II) Thermal stability: H₂S < H₂Se < H₂Te

(III) Reducing property: H₂S > H₂Se > H₂Te

Bassemerisation is used in the extraction of ______.

In the manufacture of ammonia by Haber's process, Al₂O₃ does not act as a catalyst but increases the activity of the catalyst. The role of Al₂O₃ can be best described as ____________.

Arrange the following anions according to the increasing order of their stability.

(I) \[\ce{\underset{Alkoxide anion}{R - O^-}}\]

(II)

Phenoxide anion

(III) \[\begin{array}{cc}
\ce{O}\phantom{..}\\
||\phantom{..}\\
\ce{\underset{Carboxylate anion}{R - C - O^-}}\\
\end{array}\]

The standard emf of a galvanic cell involving cell reaction with n = 1 was found to be 0.592 V at 25°C. The equilibrium constant of the reaction would be ____________.

Which of the following match is CORRECT?

(I) Frenkel defect: Electrical neutrality of the compound is preserved.

(II) Schottky defect: Density of the substance decreases.

(III) Schottky defect: Combination of vacancy defect and interstitial defect.

(IV) Frenkel defect: Small difference between size of cation and anion.

Limestone is used as a flux in the extraction of ______.

The reagent used in Gatterman reaction is ____________.

Which of following metals occurs in native state?

Mist is a colloidal solution of ____________.

In coagulation of positively charged ferric hydroxide sol, the most and least effective ions are ____________ and ____________ respectively.

Standard hydrogen electrode (SHE) is a ______.

Which of the following is a heterogeneous mixture?

Which of the following statements is CORRECT?

Which of the following is CORRECT stability order according to Irving-William order?

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

The CORRECT decreasing order for the stability of carbanion.

Identify the INCORRECT match.

____________ on heating with excess of conc. HI gives two moles of ethyl iodide.