1

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MCQ (Single Correct Answer)

+4

-1

The exact volumes of 1 M NaOH solution required to neutralise 50 mL of 1 M H

_{3}PO_{3}solution and 100 mL of 2 M H_{3}PO_{2}solution, respectively, are :2

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MCQ (Single Correct Answer)

+4

-1

Complete combustion of 1.80 g of an oxygen containing compound (C

_{x}H_{y}O_{z}) gave 2.64 g of CO_{2}and 1.08 g of H_{2}O. The percentage of oxygen in the organic compound is :3

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MCQ (Single Correct Answer)

+4

-1

The average molar mass of chlorine is
35.5 g mol

^{–1}. The ratio of^{35}Cl to^{37}Cl in naturally occuring chlorine is close to :4

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MCQ (Single Correct Answer)

+4

-1

A solution of two components containing
n

_{1}moles of the 1^{st}component and n_{2}moles of the 2^{nd}component is prepared. M_{1}and M_{2}are the molecular weights of component 1 and 2 respectively. If d is the density of the solution in g mL^{–1}, C_{2}is the molarity and x_{2}is the mole fraction of the 2^{nd}component, then C_{2}can be expressed as :Questions Asked from Some Basic Concepts of Chemistry (MCQ (Single Correct Answer))

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