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Class 11th Chemistry

Select the correct statement among the following.

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alok kumar singh

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Excessive nitrate in drinking water causes methemoglobinemia

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Class 11th Chemistry

The process of settling of colloidal particles is known as

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alok kumar singh

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The process of settling of colloidal particles is

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Class 11th Chemistry

Which one of the alkali metal can directly react with N₂ of air?

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alok kumar singh

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Class 11th Chemistry

Oxidation state of oxygen in KO₂ is

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alok kumar singh

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Let the oxidation number of O be x

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Class 11th Chemistry

pH for 0.01 M NaOH solution is

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alok kumar singh

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0.01 M NaOH,

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Class 11th Thermodynamics

For the reaction, CaCO₃(s) → CaO(s) + CO₂(g) △H = 82.8 kJ at 25°C, △U at 25°C is

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alok kumar singh

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Class 11th Chemistry

Correct order of van der Waals constant b of given gases is

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alok kumar singh

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Correct order of van there Waals constant b for gases is CO₂ > N₂ > O₂ > H₂ > He

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Class 11th Structure of Atom

Maximum number of electrons present in p subshell is

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alok kumar singh

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'p' subshell has 6 electrons.

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Class 11th Chemistry Chemical Bonding and Molecular Structure

The species which does not exist is

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alok kumar singh

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He₂ has zero bond order hence it does not exist.

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Class 11th Chemistry

Which among the following species is pyramidal in shape?

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alok kumar singh

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