Read the passage carefully and answer the questions
Amines are considered as derivatives of ammonia obtained by replacement of hydrogen atoms with alkyl or aryl groups. In nature they occur among proteins, vitamins, alkaloids and hormones. These can be primary, secondary or tertiary depending on the number of hydrogen groups replaced. They can be prepared from nitro compounds, alkyl halides, nitriles, amides etc. Due to unshared pair of electrons they behave as Lewis bases. Influence of the number of hydrogen atoms at nitrogen atom is displayed in physical properties such as solubility, boiling point and chemical reactions including basicity. Basic character of amines is expressed in terms of their \(K_b\) and \(p K_b\) values. Three classes of amines can be distinguished with p-toluene sulphonyl chloride which reacts with primary and secondary ddu amines. Amino group when attached to benzene ring behaves as an activating and ortho para directing group.
Which of the following reaction is not given by aniline?

Which phenomenon occurs when an electric field is applied to a colloidal solution and electrophoresis is prevented?
(A) \quad Reverse osmosis takes place
(B) \quad Electroosmosis takes place
(C) \quad Dispersion medium begins to move in an electric field
(D) \quad Dispersion medium becomes stationary
Choose the correct answer from the options given below :

The unit of conductance(G) is

Which of the following statements is not correct?

List-I (Name reaction.)	List-II (Reaction)
(A) Williamson ether synthesis	(I)
(B) Hydroboration oxidation	(II)
(C) Reimer-Tiemann reaction	(III)
(D) Friedel Craft Acylation reaction	(IV)

Choose the correct answer from the options given below:

Match List-l with List-ll

List-l (Rate expression)	List-II (Overall order of reaction)
(A) \(r=k[A]^{0.2}[B]^{0.3}[C]\)	(I) \(\frac{3}{10}\)
(B) \(r=k[A]^{0.2}[B]^{-0.3}[C]\)	(II) 1
(C) \(r=k[A][B]^{0.8}[C]^{-1}\)	(III) \(3 / 2\)
(D)\(r=k[A]^{0.2}[B]^{0.3}[C]^{0.5}\)	(IV) \(9 / 10\)

Choose the correct answer from the options given below:

The following reaction is known as

Microbes in human welfare Microbes are a very important component of life on earth. we use microbes and microbially derived products almost every day, like LAB to make curd, yeast to make bread, adding flavor and texture to cheese, producing antibiotics etc. The addition of LAB, improves the milk quality by increasing vit. B12. Cheese is one of the oldest food items in which microbes are used. For example, large holes in Swiss cheese are due to CO2 produced by the bacterium Propionibacterium sharmanii. The BOD test measures the rate of uptake of oxygen by microorganisms in a sample of water and thus, indirectly, BOD is a measure of the organic matter present in the water. The greater the BOD of waste water, the more is its polluting potential. In anaerobic sludge digesters, bacteria produce a mixture of gases like methane, hydrogen sulphide and carbon dioxide. These gases form biogas and can be used as a source of energy. Biofertilisers are organisms that enrich the nutrient quality of the soil. The main sources of biofertilisers are bacteria, fungi and cyanobacteria. You have studied about the nodules on the roots of leguminous plants formed by the symbiotic association of Rhizobium. These bacteria fix atmospheric nitrogen into organic forms, which is used by the plant as a nutrient. Other bacteria can fix atmospheric nitrogen while free-living in the soil (examples Azospirillum and Azotobacter).
Identify, the free living bacteria in soil, which can fix the atmospheric nitrogen.

The osmotic pressure of a solution prepared by dissolving \(5 0 ~ m g\) of H2SO4 in 2 liters of water at \(2 5 ^{ \circ } C\) will be

Light ray travels from an rarer medium to an denser medium. Which of the following is incorrect if \( (0^{\circ} < i < 90^{\circ}) \).

A wire of resistance \( 5\Omega \) is drawn out so that its length is increased by thrice its original length. The new resistance would be :

Which of the following reaction will not produce ketones?

Internal acid base reaction of amino acids is due to formation of: