Be(OH)2 is .......... in nature

1.  Neutral

2.  Basic

3.  Alkaline

4.  Amphoteric

View Answer  
4
Correct Answer :

Amphoteric


Explanation :
No Explanation available for this question

The solution of NaOH at the surface reacts with CO2 in the atmosphere to form

1.  NaHCO3

2.  Na2CO3

3.  NaCl

4.  NH4Cl

View Answer  
4
Correct Answer :

Na2CO3


Explanation :
No Explanation available for this question

The main ore of Barium is

1.  Borax

2.  Borate

3.  Bauxite

4.  Baryte

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4
Correct Answer :

Baryte


Explanation :
No Explanation available for this question

In Castner's process for extraction of sodium _____ acts as cathode

1.  Nickel rod

2.  Iron rod

3.  Copper rod

4.  None of these

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4
Correct Answer :

Iron rod


Explanation :
No Explanation available for this question

Ionization enthalpy of lithium

1.  152kJ mol-1

2.  265kJ mol-1

3.  376kJ mol-1

4.  520kJ mol-1

View Answer  
4
Correct Answer :

520kJ mol-1


Explanation :
No Explanation available for this question

Compared with the alkaline arth metals, the alkali metals have

1.  Greater melting point

2.  Greater melting point

3.  Smaller ionic radii

4.  Lower ionization energy

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4
Correct Answer :

Lower ionization energy


Explanation :
No Explanation available for this question

_____ is a major cation in cytoplasm (inside the cells)

1.  Sodium

2.  Potassium

3.  Aluminium

4.  Calcium

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4
Correct Answer :

Potassium


Explanation :
No Explanation available for this question

Due to heating of NaHCO3.......... is evolved which makes cake and breads spongy

1.  CO

2.  CO2

3.  CO32-

4.  Oxygen

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4
Correct Answer :

CO2


Explanation :
No Explanation available for this question

With pure oxygen Ba, Sr and Ra form

1.  Oxides

2.  Hydroxides

3.  Peroxides

4.  Hydrides

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4
Correct Answer :

Peroxides


Explanation :
No Explanation available for this question

Atomic radius of Cs is

1.  152 pm

2.  265 pm

3.  376 pm

4.  520 pm

View Answer  
4
Correct Answer :

265 pm


Explanation :
No Explanation available for this question
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