Which ion forms a hydroxide highly soluble in water?

1. Ni2+

2. K+

3. Zn2+

4. Al3+

Subtopic:  Physical Properties |
To view explanation, please enrol in the course below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


What would you observe if excess of dilute NaOH solution is added and shaken with an aqueous solution of aluminium chloride?

1. A permanent white precipitate is formed immediately

2. No change at first but a white precipitate is formed on standing

3. A white precipitate is formed which later dissolves

4. A green precipitate which turns red on standing in air

Subtopic:  Preparations,Properties & Uses of S Block Elements |
To view explanation, please enrol in the course below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


A colourless salt gives violet colour to Bunsen flame and also turns moistured litmus paper blue. It Is:

1. Na2CO3

2. KNO3

3. K2CO3

4. Cu(OH)2

Subtopic:  Physical Properties |
To view explanation, please enrol in the course below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


Strongest reducing agent among the following is:

1. K

2. Na

3. Al

4. Mg

Subtopic:  Physical Properties |
To view explanation, please enrol in the course below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


When crystal of caustic soda is exposed to air, a liquid layer is deposited because:

1. crystal melts

2. crystal loses water

3. crystal absorbs moisture and CO2

4. crystal sublimes

Subtopic:  Physical Properties |
To view explanation, please enrol in the course below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


Which one of the following is formed on dissolving I2 in aqueous solution of KI ?

1. KIO4

2. KIO

3. KI3

4. KIO3

Subtopic:  Physical Properties |
To view explanation, please enrol in the course below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


Which of the following statements is correct for CsBr3?

1. it is a covalent compound

2. It contains Cs2+ and Br- ions

3. It contains Cs+, Br- and Br2 lattice molecules

4. It contains Cs+ and Br3- ions

Subtopic:  Chemical Properties | Compounds of Ca and Na -Preparations,Properties & Uses |
To view explanation, please enrol in the course below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


Hypo is chemically:

1. Na2S2O3.2H2O

2. Na2S2O3.3H2O

3. Na2S2O3.4H2O

4. Na2S2O3.5H2O

Subtopic:  Preparations,Properties & Uses of S Block Elements |
To view explanation, please enrol in the course below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


If NaOH is added to an aqueous solution of Zn2+ ions, a white precipitate appears and on adding axcess NaOH, the precepitate dissolves. In this solution zinc exists in the:

1. cationic part

2. anionic part

3. both in cationic and anionic parts

4. there is no zinc left in the solution

Subtopic:  Preparations,Properties & Uses of S Block Elements |
To view explanation, please enrol in the course below.
NEET 2021 - Achiever 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 enrol in the course below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level: