Which ion forms a  highly soluble hydroxide in water?

(1) Ni2+

(2) K+

(3) Zn2+

(4) Al3+

Subtopic:  Physical Properties |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


Brine is chemically:

(1) conc. solution of Na2CO3

(2) conc. solution of Na2SO4

(3) conc. solution of NaCl

(4) conc. solution of alum

Subtopic:  Physical Properties | Chemical Properties |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


Sodium reacts with water less vigorously than potassium because:

(a) it has higher atomic weight

(b) it is less electropositive

(c) it is more electronegative

(d) it is metal

Subtopic:  Physical Properties |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


NO2 is obtained by heating:

(1) CsNO3

(2) KNO3

(3) LiNO3

(4) NaNO3

Subtopic:  Chemical Properties |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


Excess of dilute sodium hydroxide solution is gradually added with shaking to an aqueous solution of zinc sulphate. What would you observe?

(a) A light blue precipitate is first formed which finally dissolves to give a deep blue solution

(b) A white precipitate appears which dissolves to give a colourless solution.

(c) A white precipitation is formed which does not dissolve 

(d) No change takes place and the solution remains clear

Subtopic:  Chemical Properties |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


The products of the electrolysis of concentrated aqueous solution of common salt are:

(1) Na + Cl2

(2) H2 + O2

(3) NaOH + H2 + Cl2

(4) NaOH + Cl2 + O2

Subtopic:  Physical Properties | Preparations,Properties & Uses of S Block Elements |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


KO2 is used in oxygen cylinder in space air craft and submarines because it:

(a) absorbs CO2 and increase O2 content

(b) eliminate moisture

(c) absorbs CO2

(d) produces O2

Subtopic:  Physical Properties | Chemical Properties |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


Manufacture of NaOH is done by:

(1) Castner - Kellner process

(2) Solvay process

(3) Brine process

(4) Mond's process

Subtopic:  Preparations,Properties & Uses of S Block Elements |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


Lithium is the only alkali metal which is not placed in kerosene but is wrapped in paraffin wax, because:

(1) it reacts with kerosene

(2) it floats to the surface of kerosene because of low density

(3) it does not react with air and H2O

(4) none of the above

Subtopic:  Physical Properties |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


When CO2 is bubbled into an aqueous solution of Na2CO3, the following is formed:

(1) H2O

(2) OH-

(3) NaHCO3

(4) NaOH

Subtopic:  Chemical Properties |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level: