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Hinsberg’s reagent reacts with 1° amine gives a product which is soluble in alkali. 

Hinsberg’s reagent reacts with 2° amine gives a product which is insoluble in alkali. 

Hinsberg’s reagent does not react with 3° amine.

According to thermodynamics, ΔG = ΔH - T.ΔS  . Adsorption is a spontaneous process, therefore ΔG is negative since adsorption decreases entropy ( ΔS = –ve ). i.e., –T. ΔS = + ve . As a result of adsorption. ΔH has to be negative if ΔG to be negative. Hence adsorption is always exothermic. 

b. predictability

The heating of atmosphere due to absorption of IR radiation emitted by earth by the gases of atmosphere is called greenhouse effect. 

Green house gases absorb large amount of energy from sunlight and transfer it as heat by which earth gets heated. But they do not readily radiate back the earth’s heat energy to the space. Instead they reflect back a part of the heat energy to the lower atmosphere.

 (CH₃)₂NH is most basic.

Thymine is 5-methyluracil.

(b) archetype

The monomeric units of starch is Glucose

HCOOH is the strongest acid.

(c) Sixteen Personality Factor Questionnaire

Nitrogen is detected by kjeldhal method.

The amount of oxygen required by bacteria to break down the organic matter present in a certain volume of a sample of water is called Biochemical Oxygen Demand (BOD) The amount of BOD in the water is a measure of the amount of organic material in the water, in terms of how much oxygen will be required to break it down biologically.

Formic acid when heated with H₂SO₄ gives CO

1. (b) scan

2. (a) scared

3. (c) disturbs

4. (d) private

5. (b) misapply

6. (b) dependent

7. (d) neglect

8. (c) doubting

Hydrogen has been placed at the top of the alkali metal family. Hydrogen and alkali metals resemble in the following aspects.

1. Electronic configuration: Hydrogen has one electron in its valance shell like the alkali metals H - 1s¹. 

2. Electropositive character: As both hydrogen and alkali metals form monovalent cations by losing the electron in the valance shell. H → H⁺ + e^-

1. Placenta is formed at around 12 weeks of pregnancy. 

2. It consists of finger like projections between the embryo and uterine wall through which exchange of oxygen, carbondioxide, nutrients and waste materials take place by diffusion.

1. Hypertension 

2. Sphygmomanometer 

3. Hypotension

The cells involved in inflammatory reactions are Basophils

Answer is (b) a mixture of HOCl and HCl is produced in the presence of sunlight 

Cl₂(g) + H₂O (l) \(\rightarrow\)  HCl (g) +HOCl(aq)

1. Hypertension, Atherosclerosis, Cardiac arrest 

2. Two possible reason for cardio vascular disorders: 

• Regular intake of fatty food 
• Smoking 
• Lack of exercise 

3. Advices to the disease: 

• Avoid fatty food 
• Do regular exercise

The bar chart makes an interesting study of the use of chemical fertilisers and organic manure in 50 years from 1951 to 2001. Interestingly it’s a full circle for chemical fertilisers because if it was 70 kilogram per acre in 1951, in 2001 also the usage remained the same. Nevertheless, the use of chemical fertilisers steadily went down, the usage coming down to mere 30 kilograms per acre, the lowest ever, in 1981. However, it picked up again, shooting up to 60 kilograms per acre in 1991, to come back finally to the original figure of 70 kilograms per acre in 2001. The story of organic manure is the same, though in the reverse order. The use which was as low as 10 kilograms per acre in 1951 rose to 30 kilograms in 1961.1971 and 1981 witnessed a similar rise, the figures being 50 and 70. But, 1991 witnessed a fall with the usage coming down to 50 kilograms. 2001 recorded a further fall with the usage standing at 30 kilograms per acre.

Dear friends,

As I stand here to address you all, the first thought that comes to my mind is that the International Women’s Day is a symbol of the long and difficult struggle of women for equality. Even as we celebrate the day, what we have to reckon with is the truth that women have come a long way and enjoy many rights and privileges; yet they still have a long way to go if they have to consider themselves truly empowered. Danger to the safety of women, including at workplace, is still a sordid reality. Unless each man respects each woman, problems will persist. Thus, though the lot of women has improved in

Laptop account is a real account.

Investment securities are a category of securities—tradable financial assets such as equities or fixed income instruments—that are purchased with the intention of holding them for investment. Investment securities are subject to governance via Article 8 of the Uniform Commercial Code (UCC).

There are three broad stages of development: early childhood, middle childhood, and adolescence. The definitions of these stages are organized around the primary tasks of development in each stage, though the boundaries of these stages are malleable.

(a) Distillation, (b) Liquation, (c) Electrolytic rening, (d) Zone rening, (e) Mond process, (f) Van Arkel process]

[A] = O₂
[B] = Na[Ag(CN)₂]
[C] = Zn
[D] = Na2[Zn(CN)₄]

[Hint : Due to completely filled d- and/or f-orbitals in As, Sb and Bi.]

(a) Oxygen shows oxidation state of +2 in OF₂ . H₂O which is a hydride of oxygen element of group 16 is neutral in nature

(b) (iii) and (iv) 
 

It is used to produce and sustain powerful superconducting magnets to form an essential part of NMR spectrometer

(d) He

 (c) For nitrogen oxidation states from +1 to +4 disproportionate in acidic solution only. Oxidation state of phosphorous in P₂O₅ is + 5 whereas in P₂O₅ is +3 thus P₂O₅ is more acidic than P₂O_{3 .}

(a) Since F₂ is most oxidising, it is easily reduced

(a) Phosphorus occurs in minerals of the apatite family, Ca₉ (PO₄ )₆ , CaX₂ (X = F, Cl or OH) which are main components of phosphate rocks whereas arsenic and antimony are found as sulphide minerals. The increase in covalent radii from N to P is greater in comparison to increase from As to Bi.

(c) H₃ PO₄ is tribasic

(b) PCl₃ + H₂O → POCl₃ + 2HCl 

 POCl₃ + 3H₂O →H₃ PO₄ + 3HCl

(b) H₄ P₂O₅ is pyrophosphorous acid it contains P–O–P bond

(c) H₅ P₅O₁₅ (HPO₃ ) ₅ . It is metaphosphoric acid which is a cyclic phosphate.