List of top Chemistry Questions

Following reaction takes place in Daniell cell:
\(Zn(s)+Cu^{2+} (aq) \rightarrow Zn^{2+} (aq) + Cu(s); E^0_{cell} = 1.1V\)
Standard Gibbs energy, in this case will be
Which of the following statemnt is incorect for physisorption?
Which of the following are peroxo acids of sulpher?
polyethylene-glycol is used in the preparation of which types of detergent?
What is the correct order of acidity of compounds I, II and III?
i. 4-Nitrobenzoic acid 
ii. 4-Methoxy Benzoic acid
iii. Benzoic acid
Which base is not found in DNA?
The pair of lanthanides will exceptionally high 3rd ionisation enthalpy than neighbouring elements:

S1: Be+2 has higher SRP than other alkaline earth metals.
S2: Be+2 has higher hydration energy and greater △aH (atomisation enthalpy) than other alkaline earth metals.

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: Beryllium has less negative value of reduction potential compared to the other alkaline earth metals
Reason R: Beryllium has large hydration energy due to small size of \(Be ^{2+}\) but relatively large value of atomization enthalpy
In the light of the above statements, choose the most appropriate answer from the options given below

Incorrect statement about Borazine is:
Which one of the following elements will remain as liquid inside pure boiling water?
The stability of \(Cu^{2+}\) is more than \(Cu^+\) salts in aqueous solution due to

Gadolinium has a low value of third ionisation enthalpy because of

Which of the following statements are not correct?
i. Atomic radius of Ga is less than that of Al
ii. The order of ionization enthalpy of group 13 elements is B>Al>Ga>In>Tl
iii. Boron trioxide is amphoteric in nature
Which of the following are not in accordance with the property mentioned against them? I. \( F_2>Cl_2>Br_2>I_2 \): Oxidising power
II.\( MI>MBr>MCl>MF\): Ionic character of metal halide
III. \( F_2<Cl_2<Br_2<I_2 \): Bond dissociation enthalpy
IV. \( HI<HBr<HCl<HF \): Hydrogen-halogen bond strength
The correct order of atomic radii of Al, Ga, In, Tl is
The alkaline earth metal with lowest density is
The correct order of electron gain enthalpy of N, O, Cl, Al is.
Delicate balance of \(CO_2\) and \(O_2\) is not disturbed by:
An unknown organic compound is heated with fuming \(HNO_3\). The reaction mixture is treated with aq \(BaCl_2\) solution which gives white precipitate. Identify the unknown organic compound.
During bleeding from cut \(FeCl_3\) is used to stop bleeding as
The compound which does not exist.
The enthalpy change for the adsorption process and micelle for mation respectively are
Prolonged heating of ferrous ammonium sulphate is avoided to prevent :
One which does not stabilize secondary and tertiary protein?