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What is the percentage of ocean water in world ?

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Important Questions on Hydrogen

EASY
Chemistry>Inorganic Chemistry>Hydrogen>Water- Structure and Properties
Identify the incorrect statement regarding heavy water:
EASY
Chemistry>Inorganic Chemistry>Hydrogen>Water- Structure and Properties
What are the products obtained when water is auto-ionised?
EASY
Chemistry>Inorganic Chemistry>Hydrogen>Water- Structure and Properties
Pure water is a bad conductor of electricity while acidic water is a good conductor. Why?
EASY
Chemistry>Inorganic Chemistry>Hydrogen>Water- Structure and Properties

Statements about heavy water are given below.

A. Heavy water is used in exchange reactions for the study of reaction mechanisms.

B. Heavy water is prepared by exhaustive electrolysis of water.

C. Heavy water has higher boiling point than ordinary water.

D. Viscosity of H2O is greater than D2O.

Choose the most appropriate answer from the options given below:

EASY
Chemistry>Inorganic Chemistry>Hydrogen>Water- Structure and Properties
An equilibrium mixture of ice and water is under constant pressure, where ice melts if heat is supplied. For this process
MEDIUM
Chemistry>Inorganic Chemistry>Hydrogen>Water- Structure and Properties
What is the boiling point of heavy water?
EASY
Chemistry>Inorganic Chemistry>Hydrogen>Water- Structure and Properties
The method used to remove the temporary hardness of water is:
EASY
Chemistry>Inorganic Chemistry>Hydrogen>Water- Structure and Properties
How and why does the density of liquid water change on prolonged electrolysis?
EASY
Chemistry>Inorganic Chemistry>Hydrogen>Water- Structure and Properties
The number of H2O molecules participating in hydrogen bonding in CuSO4.5H2O is/are
MEDIUM
Chemistry>Inorganic Chemistry>Hydrogen>Water- Structure and Properties
H2O(ice) is an example of
MEDIUM
Chemistry>Inorganic Chemistry>Hydrogen>Water- Structure and Properties
Which of the following statements about water is FALSE?
EASY
Chemistry>Inorganic Chemistry>Hydrogen>Water- Structure and Properties
Which of the following compounds is NOT present in its standard state at 25oC and 1 atmosphere pressure?
EASY
Chemistry>Inorganic Chemistry>Hydrogen>Water- Structure and Properties
The INCORRECT statement(s) about heavy water is (are)
(A) used as a moderator in nuclear reactor
(B) obtained as a by-product in fertilizer industry.
(C) used for the study of reaction mechanism
(D) has a higher dielectric constant than water
Choose the correct answer from the options given below:
MEDIUM
Chemistry>Inorganic Chemistry>Hydrogen>Water- Structure and Properties

Given below are two statements .
Statement I : In CuSO4·5H2O, Cu-O bonds are present.

Statement II : In CuSO4.5H2O, ligands coordinating with Cu II  ion are O-and S-based ligands.

In the light of the above statements, choose the correct answer from the options given below

EASY
Chemistry>Inorganic Chemistry>Hydrogen>Water- Structure and Properties
Choose the correct statement applicable for the reaction: 2H2O+2 F2→4HF+O2
EASY
Chemistry>Inorganic Chemistry>Hydrogen>Water- Structure and Properties

In reference to water, choose the correct statement

(i) It gets oxidised to O2 during photosynthesis.

(ii) It gets reduced to H2 by highly electropositive metal.

EASY
Chemistry>Inorganic Chemistry>Hydrogen>Water- Structure and Properties
At its melting point ice is lighter than water because
HARD
Chemistry>Inorganic Chemistry>Hydrogen>Water- Structure and Properties
A gas ‘X' is passed through water to form a saturated solution. The aqueous solution on treatment with silver nitrate gives a white precipitate. The saturated aqueous solution also dissolves magnesium ribbon with evolution of a colourless gas 'Y'. Identify 'X’ and 'Y'.
MEDIUM
Chemistry>Inorganic Chemistry>Hydrogen>Water- Structure and Properties
The bond angle and dipole moment of water respectively are:
EASY
Chemistry>Inorganic Chemistry>Hydrogen>Water- Structure and Properties
Water is well known amphoprotic solvent. In which chemical reaction water is behaving as a base?