List of top Questions asked in KCET, WBJEE

From the diagram

\( \Delta H \) for the reaction C → A is:

For which one of the following mixtures is composition uniform throughout?

MnO exhibits:

In the analysis of III group basic radicals of salts, the purpose of adding NH₄Cl (solid) to NH₄OH is:

A mixture of phenol and aniline shows negative deviation from Raoult's law. This is due to the formation of:

PCC is:

Identify the wrong relation for real gases:

The first chlorinated organic insecticide prepared is:

Which one of the following does not represent the Arrhenius equation?

The incorrect statement about the Hall-Heroult process is:

A current of 3 A is passed through a molten calcium salt for 1 hr 47 min 13 sec. The mass of calcium deposited is:

When a tertiary alcohol ($C_4​H_{10}​O$) reacts with 20% $H_3​PO_4$​ at 358 K, it gives a compound ($C_4​H_8​$) as the major product. The IUPAC name of this compound is:

Solubility product of CaC₂O₄ at a given temperature in pure water is 4 × 10⁻⁹ mol²/L². Solubility of CaC₂O₄ at the same temperature is:

The value of 'A' in the equation \( \lambda_m = \lambda_m^0 - A\sqrt{C} \) is same for the pair

Propanone and Propanal are:

A metalloid is:

Which one of the following properties is generally not applicable to ionic hydrides?

But-1-yne on reaction with dilute H2​SO4​ in the presence of Hg2+ ions at 333K gives:

The complex compounds [Co(NH₃)₅SO₄]Br and [Co(NH₃)₅Br]SO₄ are:

The energy associated with the first orbit of He+ is:

Identify the incorrect statement:

For the reaction PCl5​→PCl3​+Cl2​, the rate and rate constant are 1.02×10−4mol L−1s−1 and 3.4×10−5s−1, respectively, at a given instant. The molar concentration of PCl5​ at that instant is:

Which one of the following pairs will show positive deviation from Raoult's Law?