For the cell \(Ni(s)\ |\ Ni^{2+}\ (0.1M)\ ||\ Cu^{2+}\ (0.1M)\ |\ Cu(s)\), the cell potential will increase when :

What is the structural formula for Freon-12.

Choose the correct order of increasing acidic strength of following compounds:
(A) 3-Nitrophenol
(B) Phenol
(C) Propan-1-ol
(D) 3,5-Dinitrophenol
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Answer the question on the basis of passage given below:
Second period elements of p-Block differs from the rest of their group members due to their small atomic size, high electronegativity, high ionization enthalpy and absence of d-orbitals. The elements from the second period like C, N, O have unique property of forming \(p \pi-p \pi\) multiple bonds whereas other heavier elements of p-block form \(d \pi-p \pi\) multiple bonds. This changes the properties of second period elements to great extent. Also the single bond strength of the p-block elements with their own atoms gets affected by their atomic size and presence of lone pairs.
Inert pair effect also affects the properties of the p-Block elements especially for those elements which are present from 4th period onward and this happens due to poor screening effect of inner (n-1)d subshell electrons.
Phosphorus forms \(PF _5\) but nitrogen cannot form \(NF _5\) as:

Which of the following ionic species has the greatest proton affinity to form a stable compound?

Which of the following compound is most reactive towards nucleophilic addition reaction?

Match List-l with List-ll

List-I	List-II
(A) Gatterman-Koch reaction	(I) \(\ CrO_2CI_2/CS_2\)
(B) Rosenmund reduction	(II) Acyl chloride and anhyd.\(\ AICI_3\)
(C) Etard reaction	(III) CO, HCI, \(\ AICI_3\)CuCl
(D) Friedel Craft acylation	(IV) \(\ H_2/Pd-BaSO_4\)

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Which one of the followings is not the In situ conservation site ?

Two photons of equal energy 8 MeV each, strikes two different metal sheets having work functions 4 MeV and 6 MeV, respectively. The ratio of maximum velocity of electrons emitted from two metal sheets respectively is :

Despite occupying about 70% of the surface area of earth, the productivity
of the oceans is low because-

\(2KClO_3 \xrightarrow{653-873K} 2KCl + 3O_2\)
On adding manganese dioxide to the above reaction, the subsequent decomposition takes place at:

Select which step/s out of the following doesn't/don't belong to the process of decomposition.
(A) Fragmentation
(B) Humification
(C) Anabolism
(D) Mineralisation
(E) Leaching
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Examples of corrosion include
(A) Rusting of iron
(B) Tarnishing of silver
(C) Green coating on copper and bronze
(D) Zinc coating on iron
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