JEE Main entrance exam Question Bank Solutions for Chemistry (JEE Main)

Assertion A : Activated charcoal adsorbs SO₂ more efficiently than CH₄.

Reason R : Gases with lower critical temperatures are readily adsorbed by activated charcoal.
In light of the above statements, choose the correct answer from the options given below.

Which of the following statements is incorrect regarding physisorptions?

The major product of the following reaction is:

\[\begin{array}{cc}
\ce{Cl}\phantom{.........................}\\
|\phantom{..........................}\\
\ce{CH3 - CH - CH3 ->[(i) Alc. KOH][(ii) HBr/peroxide (iii) aq. KOH]}
\end{array}\]

The number of asymmetric carbon atoms in the glucose molecule in open and cyclic form is ______.

If the Thomson model of the atom was correct, then the result of Rutherford's gold foil experiment would have been:

Which one of the lanthanoids given below is the most stable in divalent form?

Mischmetal is an alloy consisting mainly of ______.

Cerium (Z = S8) is an important member of lanthanoids. Which of the following statements about cerium is incorrect?

White precipitate of AgCl dissolves in aqueous ammonia solution due to formation of ______.

The one that is not expected to show isomerism is ______.

Number of electron-deficient molecules among the following:

PH₃, B₂H₆, CCl₄, NH₃, LiH and BCl₃

Given below are two statements:

Statement I: On heating with KHSO₄, glycerol is dehydrated and acrolein is formed.

Statement II: Acrolein has a fruity odour and can be used to test glycerol's presence.

Choose the correct option.

Ceric aminonium nitrate and CHCl₃/alc. KOH are used for the identification of functional groups present in ______ and ______ respectively.

Which one of the following compounds of Group–14 elements is not known?

Match List - I with List - II.

Choose the correct answer from the options given below:

NaH is an example of ______.

The maximum prescribed concentration of copper in drinking water is ______.

Which of the following conditions in drinking water causes methemoglobinemia?

The correct match between Item - I and Item - D is:

Arrange the following in the decreasing order of their covalent character.

(A) LiCl

(B) NaCl

(C) KCl

(D) CsCl

Choose the most appropriate answer from the options given below: