Read the passage below and answer the question:
The accumulation of molecular species at the surface rather than in the bulk of a solid or liquid is termed as adsorption. There are two types of adsorption. In physisorption, attractive forces are mainly Van der Waals while in chemical adsorption adsorbate is held with chemical bonds adsorbent. Adsorption increases with increase in pressure and decreases as temperature is du increased.
Adsorption is spontaneous because:

Give IUPAC name of the following compound:
\(CH_3-CH_2-CH_2-CH(Br)-CH\left(CH_3\right)-CH_2-CHO\)

Which of the following statements is correct for ortho and para nitrophenols?
(A) They can be separated by steam distillation
(B) o-Nitrophenol undergoes intramolecular hydrogen bonding
(C) p-Nitrophenol undergoes intermolecular hydrogen bonding
(D) p-Nitrophenol is less volatile
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Match List I with List II

LIST - I	LIST - II
A. Zone refining	I. Titanium
B. Mond's process	II. Zinc
C. Electrolytic refining	III. Nickel
D. van-Arkel method	IV. Germanium

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Gabriel phthalimide synthesis method is used for the preparation of :

Read the passage carefully and answer the questions
The carbonyl group of aldehydes and ketones is highly polar. The positively charged carbon is readily attacked by electron-rich nucleophile and the negatively charged oxygen atom is attacked by an electro-deficient electrophile. Aldehydes and ketones undergo nucleophilic addition reactions in the presence of acid or a base. The mechanism involves attack of a nucleophile on the electron deficient carbonyl carbon to form a tetrahedral intermediate. A new bond is formed between the carbon and oxygen. Protonation of the anion furnished by the reaction medium yields neutral addition product. The addition product is same whether the reaction is catalyzed by acid or a base. For example in the presence of base aldehydes and ketones react with hydrogen cyanide to form cyanohydrin.
Which of the following compounds will undergo nucleophilic addition readily?

Spin free complex among the following is :

Which of the following statements is correct for enantiomers?
(A) They exist as a pair of non-superimposable mirror images.
(B) They possess identical physical properties.
(C) They differ with respect to the rotation of plane polarized light.
(D) A mixture containing a 1:1 ratio of enantiomers is optically inactive.
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The solution of the differential equation \(\frac{d r}{d t}=-r t, r(0)=r_0\) is

Due to relative motion of a magnet with respect to coil, an emf is induced in the coil in accordance with

Lippes loop is a ________ IUD.

If \(\int \frac{x^4}{x-2} d x=p x+q x^2+r x^3+s x^4+t \log |x-2|+C\), where \(C\) is an arbitrary constant and \(p, q, r, s, t\) are real numbers, then the correct arrangement of \(p, q, r, s, t\) is

Choose the correct statement(s) for intermolecular dehydration of alcohols to form ethers
(A) The formation of ether may involve a nucleophilic bimolecular \(S_N2\) reaction or \(S_N1\) reaction
(B) The method is successful with secondary and tertiary alcohols.
(C) The reaction requires protic acids
(D) The reaction is carried out at low temperature.
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