O22- is the symbol of ion

1.  Monoxide

2.  Peroxide

3.  Super oxide

4.  Oxide

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4
Correct Answer :

Peroxide


Explanation :
No Explanation available for this question

In Ba(H2PO2) 2 the oxidation number of phosphorous is

1.  +4

2.  +3

3.  +0

4.  +5

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4
Correct Answer :

+0


Explanation :
No Explanation available for this question

Superphosphate of lime is a mixture of

1.  Ca3(PO4)2H2O+CaCl22H2O

2.  Ca3(PO4) 2+2CaSO42H2O

3.  Ca(H2PO4) 2+2(CaSO42H2O)

4.  Ca(H2PO4) 2+CaCl22H2O

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4
Correct Answer :

Ca(H2PO4) 2+2(CaSO42H2O)


Explanation :
No Explanation available for this question

The bonds present in nitric acid are

1.  Covalent and coordinate covalent

2.  Ionic and covalent

3.  Covalent bonds

4.  Ionic bonds

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4
Correct Answer :

Covalent and coordinate covalent


Explanation :
No Explanation available for this question

The transition temp.at which rhombic sulphur becomes monoclinic sulphur is

1.  1200C

2.  2400C

3.  95.50C

4.  980C

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4
Correct Answer :

95.50C


Explanation :
No Explanation available for this question

A gas whichbleaches substances by reduction process is

1.  Dry Cl2

2.  O3

3.  SO2

4.  Moist Cl2

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4
Correct Answer :

SO2


Explanation :
No Explanation available for this question

NH4NO3 on heating to 2500C-2600C gives the gas

1.  NO

2.  NO2

3.  N2

4.  N2O

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4
Correct Answer :

N2O


Explanation :
No Explanation available for this question

Which of the following is more acidic in its aqueous solution

1.  H2Te

2.  H2Se

3.  H2S

4.  H2O

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4
Correct Answer :

H2Te


Explanation :
No Explanation available for this question

Which of the following is a normal salt

1.  Na3PO4

2.  NaH2PO4

3.  NaH2PO3

4.  Na2HPO4

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4
Correct Answer :

Na3PO4


Explanation :
No Explanation available for this question

The two sulphur atoms in Na2S2O3 have

1.  Same oxidation state

2.  +6 and -2 oxidation states

3.  +4 and +6 oxidation states

4.  -2 and +4 oxidation states

View Answer  
4
Correct Answer :

+6 and -2 oxidation states


Explanation :
No Explanation available for this question
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