Q1
mcq
1 mark
An element belongs to group-15 and 3rd period of the periodic table. Its electronic configuration would be :
- A. 1s^2 2s^2 2p^6 3s^2 3p^2
- B. 1s^2 2s^2 2p^4
- C. 1s^2 2s^2 2p^6 3s^2 3p^3
- D. 1s^2 2s^2 2p^3
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Q2
mcq
1 mark
Bauxite has the composition :
- A. Al_2O_3 · nH_2O
- B. Fe_2O_3 · 2H_2O
- C. Al_2O_3
- D. None of the above
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Q3
mcq
1 mark
If 75% of a first order reaction was completed in 60 min, 50% of the same reaction under the same conditions would be completed in :
- A. 35 minutes
- B. 20 minutes
- C. 75 minutes
- D. 30 minutes
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Q4
mcq
1 mark
Which of the following reagent can be used to convert nitrobenzene to aniline ?
- A. ZnHg/NaOH
- B. Zn/NH_4Cl
- C. Sn/HCl
- D. All of these
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Q5
mcq
1 mark
HO-CH_2-CH_2-OH on heating with periodic acid gives :
- A. Methanal
- B. Methanoic acid
- C. CO_2
- D. Glyoxal
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Q6
mcq
1 mark
A complex in which the oxidation number of the metal is zero is :
- A. K_4[Fe(CN)_6]
- B. [Fe(CN)_3(NH_3)_3]
- C. [Fe(CO)_5]
- D. Both (b) and (c)
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Q7
mcq
1 mark
Which of the following can act as Lowry-Bronsted acid as well as base ?
- A. HPO_4^{2-}
- B. HCl
- C. Br^-
- D. SO_4^{2-}
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Q8
mcq
1 mark
An aqueous solution of borax is :
- A. basic
- B. neutral
- C. amphoteric
- D. acidic
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Q9
mcq
1 mark
Which one of the following is an example for homogeneous catalysis ?
- A. Hydrogenation of oil
- B. Manufacture of ammonia by Haber’s process
- C. Hydrolysis of sucrose in presence of dil.HCl
- D. Manufacture of sulphuric acid by Contact process
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Q10
mcq
1 mark
The formation of cyanohydrin from acetone is an example of :
- A. electrophilic addition
- B. nucleophilic substitution
- C. nucleophilic addition
- D. electrophilic substitution
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Q11
mcq
1 mark
Which of the following oxidation states is most common among the lanthanoids ?
- A. 15
- B. 14
- C. 13
- D. 12
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Q12
mcq
1 mark
Faraday constant is defined as :
- A. Charge required to deposit one mole of substance
- B. Charge carried by 1 electron
- C. Charge carried by 6.22 \times 10^{10} electrons
- D. Charge carried by one mole of electrons
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Q13
mcq
1 mark
Which of the following amino acids are achiral ?
- A. Proline
- B. Alanine
- C. Glycine
- D. Leucine
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Q14
mcq
1 mark
The crystal with a metal deficiency defect is :
- A. ZnO
- B. NaCl
- C. KCl
- D. FeO
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Q15
mcq
1 mark
Fog is colloidal solution of :
- A. liquid in gas
- B. solid in gas
- C. gas in liquid
- D. gas in gas
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Q16
short answer
2 marks
What are the differences between minerals and ores ?
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Q17
short answer
2 marks
Which is more stable Fe^{3+} or Fe^{2+} ? Why ?
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Q20
short answer
2 marks
Give examples for the first order reaction.
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Q21
short answer
2 marks
What are the limitations of Arrhenius concept ?
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Q24
short answer
3 marks
Identify A and B in the following sequence of reactions: CH_3Br \xrightarrow{NaN_3} A \xrightarrow{LiAlH_4} B
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Q25
short answer
3 marks
What are interhalogen compounds ? Give examples.
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Q26
short answer
3 marks
What are the properties of interstitial compounds ?
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Q27
short answer
3 marks
Write Arrhenius equation and explain the terms involved.
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Q28
short answer
3 marks
What are the factors that affects electrolytic conductance ?
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Q29
short answer
3 marks
What is homogeneous catalysis ? Give example.
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Q30
short answer
3 marks
Write any one method of preparation for diethyl ether.
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Q33
short answer
3 marks
Write the following for the complex [Ag(NH_3)_2]^+. (a)Ligand (b)Central metal ion (c)IUPAC name
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Q34
long answer
5 marks
(a)(i)Write a note on gravity separation method. (ii)Explain the Mond’s Process of refining nickel.
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Q35
long answer
5 marks
(b)(i)What is inert pair effect ? (ii)What are the uses of boric acid ?
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Q36
long answer
5 marks
(a)(i)What are the uses of oxygen ? (ii)How will you prepare bleaching powder ?
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Q37
long answer
5 marks
(b)Write the postulates of Werner’s Theory.
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Q38
long answer
5 marks
(a)Differentiate crystalline solids and amorphous solids.
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Q39
long answer
5 marks
(b)(i)Define pH. (ii)Explain common ion effect with example.
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Q40
long answer
5 marks
(a)Derive an expression for Nernst equation.
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Q41
long answer
5 marks
(b)What are the characteristics of catalyst ?
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Q42
long answer
5 marks
(a)Explain the reducing action of formic acid with example.
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Q43
long answer
5 marks
(b)Write a note on: (i)Carbylamine reaction (ii)Gabriel phthalimide synthesis
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Q45
long answer
5 marks
Write a note on gravity separation method.
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Q46
long answer
5 marks
Explain the Mond’s Process of refining nickel.
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Q50
long answer
5 marks
How will you prepare bleaching powder ?
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Q52
long answer
5 marks
Explain common ion effect with example.
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