Sujeet Kumar

Try this ….. (Textbook Page No 171)1. Choose the most correct option. Question i.Which one of the following is diamagnetica. Cr3⊕b. Fe3⊕c. Cu2⊕d. Sc3⊕Answer:d. Sc3⊕ Question ii.The most stable oxidation state of Titanium isa. +2b. +3c. +4d. +5Answer:c. +4 Question iii.Components of Nichrome alloy area. Ni, Cr, Feb. Ni, Cr, Fe, Cc. Ni, Crd. Cu, … Read more

1. Select appropriate answers for the following. Question i.Which of the following has the highest electron gain enthalpy?A. FluorineB. ChlorineC. BromineD. IodineAnswer:B. Chlorine Question ii.Hydrides of group 16 are weakly acidic. The correct order of acidity isA. H2O > H2S > H2Se > H2TeB. H2Te > H2O > H2S > H2SeC. H2Te > H2Se > … Read more

1. Choose the most correct option. Question i.The rate law for the reaction aA + bB → P is rate = k[A] [B]. The rate of reaction doubles ifa. concentrations of A and B are both doubled.b. [A] is doubled and [B] is kept constantc. [B] is doubled and [A] is halvedd. [A] is kept … Read more

1. Choose the most correct option. Question i.Two solutions have the ratio of their concentrations 0.4 and ratio of their conductivities 0.216. The ratio of their molar conductivities will be(a) 0.54(b) 11.574(c) 0.0864(d) 1.852Answer:(a) 0.54 Question ii.On diluting the solution of an electrolyte,(a) both ∧ and κ increase(b) both ∧ and κ decrease(c) ∧ increases … Read more

1. Select the most appropriate option. Question 1.The correct thermodynamic conditions for the spontaneous reaction at all temperatures are(a) ΔH < 0 and ΔS > 0(b) ΔH > 0 and ΔS < 0(c) ΔH < 0 and ΔS < 0(d) ΔH < 0 and ΔS = 0Answer:(a) ΔH < 0 and ΔS > 0 Question … Read more

1. Choose the most correct answer : Question i.The pH of 10-8 M of HCl is(a) 8(b) 7(c) less than 7(d) greater than 7Answer:(c) less than 7 Question ii.Which of the following solution will have pH value equal to 1.0?(a) 50 mL of 0.1M HCl + 50mL of 0.1 M NaOH(b) 60 mL of 0.1M HCl … Read more

1. Choose the most correct answer. Question i.The vapour pressure of a solution containing 2 moles of a solute in 2 moles of water (vapour pressure of pure water = 24 mm Hg) is(a) 24 mm Hg(b) 32 mm Hg(c) 48 mm Hg(d) 12 mm HgAnswer:(d) 12 mm Hg Question ii.The colligative property of a … Read more

1. Choose the most correct answer. Question i.Molecular solids are(a) crystalline solids(b) amorphous solids(c) ionic solids(d) metallic solidsAnswer:(b) amorphous solids Question ii.Which of the following is n-type semiconductor?(a) Pure Si(b) Si doped with As(c) Si doped with Ga(d) Ge doped with InAnswer:(b) Si doped with As Question iii.In Frenkel defect(a) electrical neutrality of the substance … Read more

1. Multiple choice questions Question 1.Observe the graph and select the correct option.(a) Line A represents, S = CA²(b) Line B represents, log C = log A + Z log S(c) Line A represents, S = CAZ(d) Line B represents, log S = log Z + C log AAnswer:(c) Line A represents, S = CAZ … Read more

1. Multiple choice questions Question 1.Which one of the following has the largest population in a food chain?(a) Producers(b) Primary consumers(c) Secondary consumers(d) DecomposersAnswer:(a) Producers Question 2.The second trophic level in a lake is ……………………(a) Phytoplankton(b) Zooplankton(c) Benthos(d) FishesAnswer:(b) Zooplankton Question 3.Secondary consumers are …………………….(a) Herbivores(b) Producers(c) Carnivores(d) AutotrophsAnswer:(c) Carnivores Question 4.What is the % … Read more