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Which of the following is INCORRECT statement?
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Which of the following is/are CORRECT?
(I) Acidic character: HF > HCl > HBr
(II) Thermal stability: HF > HCl > HBr
(III) Bond dissociation enthalpy: HF < HCl < HBr
Concept: undefined >> undefined
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For the preparation of mixed ethers by Williamson synthesis, which of the following combination will give the best yield?
Concept: undefined >> undefined
Which of the following statements Is true for carbonyl group?
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Which among the following is a biodegradable polymer?
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Identify the symbol used for water according to Dalton's atomic theory?
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Zirconium is refined by ____________.
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Low reactivity of ketones with respect to aldehydes is due to ____________.
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Identify the CORRECT statements from the following.
i. The colour of colloidal dispersion depends on size of colloidal particles.
ii. Tyndall effect is used to distinguish between colloidal dispersion and true solution.
iii. Eosin and congo red are examples of negatively charged sols.
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Which of the following methods is used to separate wolframite and stannic oxide present in cassiterite?
Concept: undefined >> undefined
Action of hydrogen iodide on anisole gives ______.
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Which among the following solids shows Frenkel defect?
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Calculate the difference between heat of combustion of carbon monoxide gas at constant pressure and at constant volume at 27°C? (R = 2 cal K-1 mol-1).
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When CuSO4 solution in water is treated with concentrated HCl it turns _______.
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Which complex among the following gives a white precipitate on treatment with an aqueous solution of barium chloride?
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Which of the following statements is INCORRECT for Dalton's atomic theory?
Concept: undefined >> undefined
Which of the following is/are CORRECT?
(I) Acidic character: H2S < H2Se < H2Te
(II) Thermal stability: H2S < H2Se < H2Te
(III) Reducing property: H2S > H2Se > H2Te
Concept: undefined >> undefined
The pH of 0.001 M NaOH(aq) solution will be:
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Bassemerisation is used in the extraction of ______.
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In the manufacture of ammonia by Haber's process, Al2O3 does not act as a catalyst but increases the activity of the catalyst. The role of Al2O3 can be best described as ____________.
Concept: undefined >> undefined
