Q1
mcq
1 mark
Assertion: Monoclinic sulphur is an example of monoclinic crystal system. Reason : For a monoclinic system, a ≠ b ≠ c and α=γ=908, β ≠ 908.
- A. Assertion is true but Reason is false.
- B. Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- C. Both Assertion and Reason are false.
- D. Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
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Q2
mcq
1 mark
IUPAC name of the complex K3[Al(C2O4)3] is :
- A. Potassium trisoxalato aluminate (III)
- B. Potassium trioxalato aluminium (III)
- C. Potassium trioxalato aluminate (III)
- D. Potassium trioxalato aluminate (II)
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Q3
mcq
1 mark
Which of the following is the strongest acid among all ?
- A. HBr
- B. HI
- C. HCl
- D. HF
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Q4
mcq
1 mark
Which of the following is not sp2 hybridised ?
- A. Fullerene
- B. Graphite
- C. Dry ice
- D. Graphene
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Q5
mcq
1 mark
The pyrimidine bases present in RNA are :
- A. Cytosine and Thiamine
- B. Cytosine and Adenine
- C. Cytosine and Uracil
- D. Cytosine and Guanine
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Q6
mcq
1 mark
Aspirin is :
- A. chlorobenzoic acid
- B. acetyl salicylic acid
- C. anthranilic acid
- D. benzoyl salicylic acid
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Q7
mcq
1 mark
In acid medium, potassium permanganate oxidizes oxalic acid to :
- A. acetate
- B. oxalate
- C. acetic acid
- D. carbon dioxide
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Q8
mcq
1 mark
When aniline reacts with acetic anhydride, the product formed is :
- A. p-aminoacetophenone
- B. o-aminoacetophenone
- C. acetanilide
- D. m-aminoacetophenone
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Q9
mcq
1 mark
Among the following which will not be hydrolysed ?
- A. Sodium Chloride
- B. Sodium Formate
- C. Ammonium Formate
- D. Ammonium Nitrate
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Q10
mcq
1 mark
Among the following cells primary cells are : (i)Leclanche cell (ii)Nickel-Cadmium cell (iii)Lead Storage Battery (iv)Mercury cell
- A. (iii) and (iv)
- B. (i) and (iv)
- C. (ii) and (iii)
- D. (i) and (iii)
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Q11
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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Q12
mcq
1 mark
The rate constant of a reaction is 5.8×10−2 s−1. The order of the reaction is :
- A. Second order
- B. First order
- C. Third order
- D. Zero order
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Q13
mcq
Among the following cells primary cells are :
- A. (iii) and (iv)
- B. (i) and (iv)
- C. (ii) and (iii)
- D. (i) and (iii)
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Q14
mcq
In the electrolytic refining of copper, which one of the following is used as anode ?
- A. Carbon rod
- B. Pure copper
- C. Platinum electrode
- D. Impure copper
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Q15
mcq
Activity of iron catalyst is increased by the __________ compound.
- A. $CH_3COOH$
- B. $H_2S$
- C. $Al_2O_3$
- D. $As_2O_3$
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Q16
mcq
The oxidising agent used to stop the oxidation of primary alcohol at the aldehyde stage is :
- A. $Na_2Cr_2O_7$
- B. $KMnO_4$
- C. $K_2Cr_2O_7$
- D. $PCC$
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Q17
short answer
How will you convert boric acid to boron nitride ?
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Q18
short answer
Sulphuric acid is a dehydrating agent. Justify with an example.
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Q19
short answer
Explain common ion effect with an example.
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Q20
short answer
Can $Fe^{3+}$ oxidise bromide to bromine under Standard Conditions ? Given : $Fe^{3+} | Fe^{2+} E = 0.771 V$; $Br^{-} | Br_2 E = -1.09 V$
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Q22
short answer
Write the structure of the following : $\alpha-D-glucopyranose$ and $\beta-D-glucopyranose$
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Q26
short answer
Which is more stable $Fe^{3+}$ or $Fe^{2+}$? Why ?
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Q27
short answer
Aluminium crystallizes in a cubic close packed structure. Its metallic radius is 125 pm. Calculate the edge length of unit cell.
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Q28
short answer
Write Arrhenius equation and explain the terms involved.
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Q29
short answer
Explain the effect of temperature and pressure on physisorption and chemisorption.
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Q31
short answer
Write the reaction of primary amine with Carbon disulphide ($CS_2$).
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Q34
short answer
In the complex, $[Co(CN)_2 Cl_2]Cl$, identify the following: (i) IUPAC name
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Q35
long answer
5 marks
What are the differences between minerals and ores ?
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Q36
long answer
5 marks
What is the role of silica in the extraction of copper ?
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Q39
short answer
In the complex, [Co(CN)$_{2}$ Cl$_{2}$]Cl, identify the following. (i)IUPAC name (ii)Central metal ion (iii)Co-ordination number
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Q40
short answer
What is Lanthanoid Contraction and what are the consequences of Lanthanoid Contraction ?
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Q41
short answer
Write a short notes on double salts and co-ordination compounds.
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Q42
short answer
Give an example of Coordination Compound used in medicine and a biologically important Coordination Compound.
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Q43
short answer
Calculate the percentage efficiency of packing in case of simple cubic crystal.
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Q44
short answer
Derive the integrated rate law for a Zero order reaction, A → product.
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Q49
short answer
How acetic acid is prepared from Grignard reagent ?
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Q50
short answer
What are bio-degradable polymers ? Give an example.
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Q51
short answer
An organic Compound (A) of molecular formula C$_{2}$H$_{4}$O reacts with Zn-Hg/Conc. HCl to give Compound (B) which reacts with HNO$_{3}$ forming Compound (C) (as major product) and Compound (D). Compound (C) reacts with conc. HCl to give Compound (E) (Table vinegar) and hydroxylamine. Identify A, B, C, D and E with suitable reactions.
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