_____ is used as mild abrasive in tooth paste

1.  CaO

2.  Ca(OH)2

3.  CaCO3

4.  CaCl2

View Answer  
4
Correct Answer :

CaCO3


Explanation :
No Explanation available for this question

Which of the following is the most electropositive element

1.  Sodium

2.  Lithium

3.  Potassium

4.  Ceasium

View Answer  
4
Correct Answer :

Ceasium


Explanation :
No Explanation available for this question

______ is used to lower down temperature of ice

1.  Na2CO3

2.  NaHCO3

3.  Na2O2

4.  NaCl

View Answer  
4
Correct Answer :

NaCl


Explanation :
No Explanation available for this question

NaCl when heated with conc. H2SO4 and MnO2 liberates

1.  Hydrogen gas

2.  Chlorine gas

3.  CO2

4.  HCl

View Answer  
4
Correct Answer :

Chlorine gas


Explanation :
No Explanation available for this question

With pure oxygen Ba, Sr and Ra form

1.  Oxides

2.  Hydroxides

3.  Peroxides

4.  Hydrides

View Answer  
4
Correct Answer :

Peroxides


Explanation :
No Explanation available for this question

Identify the hydroxide which is a weak base in the alkali group element

1.  LiOH

2.  KOH

3.  NaOH

4.  Mg(OH)2

View Answer  
4
Correct Answer :

LiOH


Explanation :
No Explanation available for this question

Solvay process is used for the manufacture of

1.  NaOH

2.  Na2CO3

3.  NH3

4.  NaCl

View Answer  
4
Correct Answer :

Na2CO3


Explanation :
No Explanation available for this question

Alkali earth metals except Be can have coordination number of 6 by making use of

1.  p -orbitals

2.  f -orbitals

3.  s -orbitals

4.  d -orbitals

View Answer  
4
Correct Answer :

d -orbitals


Explanation :
No Explanation available for this question

Atomic size of alkaline earth metal are______ than alkali metals

1.  Smaller

2.  Larger

3.  Similar

4.  None of these

View Answer  
4
Correct Answer :

Smaller


Explanation :
No Explanation available for this question

In the Solvay's process, NH4Cl is treated with milk of lime to recover

1.  NaCl

2.  NH4HCO3

3.  NH3

4.  CO2

View Answer  
4
Correct Answer :

NH3


Explanation :
No Explanation available for this question
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