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Question 1:

Which of the following compounds would give the following set of qualitative analysis?

• (i) Fehling's Test: Positive
• (ii) Na fusion extract upon treatment with sodium nitroprusside gives a blood red colour

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Question 2:

What is the correct order of acidity of the protons marked A-D in the given compounds?

1. H_C > H_D > H_B > H_A
2. H_C > H_D > H_A > H_B
3. H_D > H_C > H_B > H_A
4. H_C > H_A > H_D > H_B

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Question 3:

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Ketoses give Seliwanoff's test faster than Aldoses.
Reason (R): Ketoses undergo α-elimination followed by formation of furfural.

In light of the above statements, choose the correct answer from the options given below:

1. (A) is false but (R) is true
2. Both (A) and (R) are true and (R) is the correct explanation of (A)
3. (A) is true but (R) is false
4. Both (A) and (R) are true but (R) is not the correct explanation of (A)

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Question 4:

In the extraction of copper, its sulphide ore is heated in a reverberatory furnace after mixing with silica to:

1. separate CuO as CuSiO₃
2. remove calcium as CaSiO₃
3. decrease the temperature needed for roasting of Cu₂S
4. remove FeO as FeSiO₃

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Question 5:

Amongst the following compounds, which one is an antacid?

1. Ranitidine
2. Meprobamate
3. Terfenadine
4. Brompheniramine

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Question 6:

The major products 'A' and 'B', respectively, are:

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Question 7:

Benzyl isocyanide can be obtained by:

Choose the correct answer from the options given below:

1. A and D
2. Only B
3. A and B
4. B and C

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Question 8:

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): In expensive scientific instruments, silica gel is kept in watch-glasses or in semipermeable membrane bags.
Reason (R): Silica gel adsorbs moisture from air via adsorption, thus protects the instrument from water corrosion (rusting) and/or prevents malfunctioning.

In light of the above statements, choose the correct answer from the options given below:

1. A is false but (R) is true
2. A is true but (R) is false
3. Both (A) and (R) are true and (R) is the correct explanation of (A)
4. Both (A) and (R) are true but (R) is not the correct explanation of (A)

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Question 9:

Match List I with List II:

1. A – II, B – III, C – IV, D – I
2. A – IV, B – III, C – II, D – I
3. A – III, B – I, C – IV, D – I
4. A – II, B – I, C – IV, D – III

Question 10:

Caprolactam when heated at high temperature in presence of water gives:

1. Teflon
2. Dacron
3. Nylon 6, 6
4. Nylon 6

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Question 11:

The alkaline earth metal sulphate(s) which are readily soluble in water is/are:

1. BeSO₄
2. MgSO₄
3. CaSO₄
4. SrSO₄
5. BaSO₄

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Question 12:

Which of the following is the correct order of ligand field strength?

1. CO < en < NH₃ < C₂O₄^2- < S^2-
2. S^2- < C₂O₄^2- < NH₃ < en < CO
3. NH₃ < en < CO < S^2- < C₂O₄^2-
4. S^2- < NH₃ < en < CO < C₂O₄^2-

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Question 13:

Formation of photochemical smog involves the following reaction in which A, B, and C are respectively:
(i) NO₂ + A → B
(ii) B + O₂ → C
(iii) A + C → NO₂ + O₂

1. O, NO, and NO₃^-
2. N₂O and NO
3. N, O₂, and O₃
4. NO, O, and O₃

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Question 14:

During the qualitative analysis of SO₃^2- using dilute H₂SO₄, SO₂ gas is evolved which turns K₂Cr₂O₇ solution (acidified with dilute H₂SO₄):

1. Black
2. Red
3. Green
4. Blue

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Question 15:

To inhibit the growth of tumours, identify the compounds used from the following:

1. EDTA
2. Coordination Compounds of Pt
3. D - Penicillamine
4. Cis - Platin

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Question 16:

In the wet tests for identification of various cations by precipitation, which transition element cation doesn't belong to group IV in qualitative inorganic analysis?

1. Fe³⁺
2. Zn²⁺
3. Co²⁺
4. Ni²⁺

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Question 17:

Match List I with List II:

1. A – II, B – III, C – IV, D – I
2. A – IV, B – III, C – II, D – I
3. A – II, B – I, C – IV, D – III
4. A – IV, B – I, C – II, D – III

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Question 18:

For OF₂ molecule consider the following:
(A) Number of lone pairs on oxygen is 2.
(B) F-O-F angle is less than 104.5°.
(C) Oxidation state of O is -2.
(D) Molecule is bent 'V' shaped.
(E) Molecular geometry is linear.

Correct options are:

1. C, D, E only
2. B, E, A only
3. A, C, D only
4. A, B, D only

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Question 19:

Lithium aluminium hydride can be prepared from the reaction of:

1. LiCl and Al₂H₆
2. LiH and Al₂Cl₆
3. LiCl, Al and H₂
4. LiH and Al(OH)₃

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Question 20:

Match List – I with List – II

1. A – II, B – IV, C – I, D – III
2. A – I, B – III, C – IV, D – II
3. A – IV, B – III, C – II, D – I
4. A – IV, B – II, C – I, D – III

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Question 21:

Consider the cell Pt(s)|H₂(g, 1 atm)|H⁺(aq, 1M)||Fe³⁺(aq), Fe²⁺(aq)|Pt(s). When the potential of the cell is 0.712 V at 298 K, the ratio [Fe²⁺]/[Fe³⁺] is ______. (Nearest integer)

Given: Fe³⁺ + e^- → Fe²⁺, E°_{Fe³⁺/Fe²⁺} = 0.771 V.
2.303RT/F = 0.06 V.

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Question 22:

A 300 mL bottle of soft drink has 0.2 M CO₂ dissolved in it. Assuming CO₂ behaves as an ideal gas, the volume of the dissolved CO₂ at STP is ______ mL. (Nearest integer)

Given: At STP, molar volume of an ideal gas is 22.7 L mol^-1.

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Question 23:

A solution containing 2 g of a non-volatile solute in 20 g of water boils at 373.52 K. The molecular mass of the solute is ______ g mol^-1. (Nearest integer)

Given: Water boils at 373 K, K_b for water = 0.52 K kg mol^-1.

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Question 24:

If compound A reacts with B following first-order kinetics with rate constant 2.011 × 10^-3 s^-1, the time taken by A (in seconds) to reduce from 7 g to 2 g will be ______. (Nearest Integer)

Given: log 5 = 0.698, log 7 = 0.845, log 2 = 0.301.

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Question 25:

The energy of one mole of photons of radiation of frequency 2 × 10¹² Hz in J mol^-1 is ______. (Nearest integer)

Given: h = 6.626 × 10^-34 Js, N_A = 6.022 × 10²³ mol^-1.

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Question 26:

The number of electrons involved in the reduction of permanganate to manganese dioxide in acidic medium is ______.

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Question 27:

When 2 liters of ideal gas expands isothermally into a vacuum to a total volume of 6 liters, the change in internal energy is ______ J. (Nearest integer)

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Question 28:

600 mL of 0.01 M HCl is mixed with 400 mL of 0.01 M H₂SO₄. The pH of the mixture is ______ × 10^-2. (Nearest integer)

Given: log 2 = 0.30, log 3 = 0.48, log 5 = 0.69, log 7 = 0.84, log 11 = 1.04.

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Question 29:

A trisubstituted compound ‘A’, C₁₀H₁₂O₂, gives neutral FeCl₃ test positive. Treatment of compound ‘A’ with NaOH and CH₃Br gives C₁₁H₁₄O₂, with hydroiodic acid gives methyl iodide and with hot conc. NaOH gives a compound ‘B’, C₁₀H₁₂O₂. Compound ‘A’ also decolourises alkaline KMnO₄. The number of π bond/s present in the compound ‘A’ is ______.

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Question 30:

Some amount of dichloromethane (CH₂Cl₂) is added to 671.141 mL of chloroform (CHCl₃) to prepare a 2.6 × 10^-3 M solution of CH₂Cl₂ (DCM). The concentration of DCM is ______ ppm (by mass).

Given: Atomic mass C = 12, H = 1, Cl = 35.5, density of CHCl₃ = 1.49 g cm^-3.

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