Which of the following compound is used to scan the X-ray of the human digestive system

1.  BaCl2

2.  CaCl2

3.  BaSO4

4.  CaCO3

View Answer  
4
Correct Answer :

BaSO4


Explanation :
No Explanation available for this question

NaOH melts at

1.  591 K

2.  519 K

3.  5911 K

4.  5191 K

View Answer  
4
Correct Answer :

591 K


Explanation :
No Explanation available for this question

______ is used in medicines as a sedative

1.  LiCl

2.  LiBr

3.  LiF

4.  LiH

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4
Correct Answer :

LiBr


Explanation :
No Explanation available for this question

______ alloy is used for aircraft construction

1.  Li - Pb

2.  Li - Mg

3.  Li - Al

4.  Li - Sr

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4
Correct Answer :

Li - Al


Explanation :
No Explanation available for this question

Which of the following is the correct electron dot structure of N2O molecule

1.   //

2.   //

3.   //

4.   //

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4
Correct Answer :


Explanation :
No Explanation available for this question

Slaked lime reacts with chlorine to give

1.  CaCl2

2.  CaO

3.  CaOCl2

4.  CaCO3

View Answer  
4
Correct Answer :

CaOCl2


Explanation :
No Explanation available for this question

Pure NaClis obtained by passing ....... through saturated solution of crude NaCl

1.  HCl gas

2.  HNO3 gas

3.  Cl2 gas

4.  H2SO4 gas

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4
Correct Answer :

HCl gas


Explanation :
No Explanation available for this question

______ plays an important role in Wurtz synthesis

1.  Li

2.  Na

3.  K

4.  Cs

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4
Correct Answer :

Na


Explanation :
No Explanation available for this question

Which of the following compound is an ingredient of tooth paste

1.  Magnesium hydroxide

2.  Calcium sulphate

3.  Calcium carbonate

4.  Magnesium carbonate

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4
Correct Answer :

Magnesium carbonate


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

View Answer  
4
Correct Answer :

Iron rod


Explanation :
No Explanation available for this question
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