Which of the following is the correct formula for kinetic energy based on dimensional arguments?
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Correct answer: (B) K = ½mv²
1 marks · 2023 · Set A
Question 52
The geometrical shape of PCl₅ molecules is
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Correct answer: (A) Trigonal bipyramidal
1 marks · 2023 · Set A
Question 53
Which of the following molecules has T-shaped geometry?
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Correct answer: (B) ClF₃
1 marks · 2023 · Set A
Question 54
CO₂ is isostructural with which of the following?
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Correct answer: (C) C₂H₂
1 marks · 2023 · Set A
Question 55
Which of the following is a molecular solid?
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Correct answer: (C) Methane
1 marks · 2023 · Set A
Question 56
Which of the following molecules has zero dipole moment?
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Correct answer: (C) CO₂
1 marks · 2023 · Set A
Question 57
How many π bonds are present in HC≡CCH=CHCH₃?
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Correct answer: (A) 3
1 marks · 2023 · Set A
Question 58
Repulsion is maximum in
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Correct answer: (B) Lone pair–lone pair
1 marks · 2023 · Set A
Question 59
Which of the following molecules shows metamerism?
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Correct answer: (A) C₄H₁₀O
1 marks · 2023 · Set A
Question 60
When sodium and chlorine react, then the energy
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Correct answer: (A) Is released and an ionic bond is formed
1 marks · 2023 · Set A
Question 61
The vapour pressures of water, acetone and ethanol at 293 K are 2.34 kPa, 12.36 kPa and 5.85 kPa respectively. Which of the following has the lowest boiling point?
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Correct answer: (B) Acetone
1 marks · 2023 · Set A
Question 62
A gas can be liquefied by pressure only if its temperature is
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Correct answer: (B) Less than the critical temperature
1 marks · 2023 · Set A
Question 63
Which of the following reactions involves homogeneous equilibrium?
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Correct answer: (A) 2NO₂(g) ⇌ 2N₂(g) + O₂(g)
1 marks · 2023 · Set A
Question 64
In 2NH₃ → N₂ + 3H₂, the order of the reaction is
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Correct answer: (A) Zero
1 marks · 2023 · Set A
Question 65
Which of the following statements is correct?
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Correct answer: (D) More than one of the above
1 marks · 2023 · Set A
Question 66
Which of the following equations represents Bragg’s law?
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Correct answer: (B) nλ = 2d sin θ
1 marks · 2023 · Set A
Question 67
Write the conjugate acids for the following Brønsted bases: NH₂⁻, NH₃, HCOO⁻.
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Correct answer: (A) NH₃, NH₄⁺, HCOOH
1 marks · 2023 · Set A
Question 68
Determine the oxidation numbers of the active elements in the following compounds: KMnO₄, K₂Cr₂O₇, KClO₄.
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Correct answer: (A) +7, +6, +7
1 marks · 2023 · Set A
Question 69
Which of the following is the correct equation?
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Correct answer: (B) ΔG = ΔH − TΔS
1 marks · 2023 · Set A
Question 70
Which of the following is not the correct statement?
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Correct answer: (C) A proton is a Lewis base.
1 marks · 2023 · Set A
Question 71
In the evaporation of water, the entropy
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Correct answer: (B) Increases
1 marks · 2023 · Set A
Question 72
The degree of ionization of a 0.1 M bromoacetic acid solution is 0.132. The pH of the solution is
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Correct answer: (B) 1.88
1 marks · 2023 · Set A
Question 73
Which compound is insoluble in water?
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Correct answer: (B) BaSO₄
1 marks · 2023 · Set A
Question 74
Choose the correct statement.
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Correct answer: (B) Methyl orange is red in the acidic region and yellow in the alkaline region.
1 marks · 2023 · Set A
Question 75
Which of the following has the lowest boiling point?
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Correct answer: (B) H₂S
1 marks · 2023 · Set A
Question 76
Which indicator will be suitable for the titration of HCOOH and NaOH?
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Correct answer: (B) Phenolphthalein
1 marks · 2023 · Set A
Question 77
The order of correct acidic strengths of halogen acids is
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Correct answer: (E) None of the above
1 marks · 2023 · Set A
Question 78
Choose the correct statement.
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Correct answer: (D) More than one of the above
1 marks · 2023 · Set A
Question 79
In ClF₃, the nature of hybridization is
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Correct answer: (C) sp³d
1 marks · 2023 · Set A
Question 80
What will be the conjugate bases for the following Brønsted acids? HF, H₂SO₄, HCO₃⁻
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Correct answer: (A) F⁻, HSO₄⁻, CO₃²⁻
1 marks · 2023 · Set A
Question 81
Cr has electronic configuration
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Correct answer: (B) 3s² 3p⁶ 3d⁵ 4s¹
1 marks · 2023 · Set A
Question 82
The concentration of ore is carried out by which of the following methods?
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Correct answer: (D) More than one of the above
1 marks · 2023 · Set A
Question 83
The highest oxidation state of any transition metal is
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Correct answer: (A) +8
1 marks · 2023 · Set A
Question 84
Which of the following methods is used for the purification of zirconium?
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Correct answer: (A) Van Arkel method
1 marks · 2023 · Set A
Question 85
Cell reaction will be spontaneous if
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Correct answer: (C) ΔG is negative
1 marks · 2023 · Set A
Question 86
Which of the following is the electron-precise hydride?
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Correct answer: (C) Methane
1 marks · 2023 · Set A
Question 87
The atomic number of Cu is 29. Its EAN in [Cu(NH₃)₄]²⁺ is
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Correct answer: (A) 35
1 marks · 2023 · Set A
Question 88
Which of the following alkali metals forms superoxide?
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Correct answer: (D) More than one of the above
1 marks · 2023 · Set A
Question 89
Which of the following alkaline earth metals imparts colour to the flame?