Calorific value of producer gas is low because of

1.  high percent of N2

2.  low percent of CO2

3.  high percent of CO

4.  low percent of N2

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4
Correct Answer :

low percent of N<sub>2</sub>


Explanation :
No Explanation available for this question

Among  the following, which is water insoluble

1.  Sodium fluoride

2.  Potassium fluoride

3.  Beryllium fluoride

4.  Magnesium fluoride

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4
Correct Answer :

Beryllium fluoride


Explanation :
No Explanation available for this question

Which of the following is not correct

1.  Milk is a naturally occurring emulsion

2.  Gold sol is a lyophilic sol

3.  Physical adsorption decreases with rise in temperature

4.  Chemical adsorption is unilayered

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4
Correct Answer :

Gold sol is a lyophilic sol


Explanation :
No Explanation available for this question

The equilibrium constant for the reactionSO2(g) + (1/2) O2(g) <====> SO3(g) is  5 x 10-2 at

1.  100 atm

2.  200 atm

3.  4 x 102  atm

4.  6.25x 104  atm

View Answer  
4
Correct Answer :

4 x 10<sup>2</sup>&nbsp; atm


Explanation :
No Explanation available for this question

The standard reduction potentials of Zn2- | Zn, Cu2+| Cu and Ag+| Cu and Ag+| Ag are respectively -0.76, 0.34 and 0.8 V. The following cells were constructed :

1.  2 > 3 > 1

2.  2 > 1 > 3

3.  1 > 2 > 3

4.  3 > 1 > 2

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4
Correct Answer :

2 > 1 > 3


Explanation :
No Explanation available for this question

What is the correct order of spin only magnetic moment (in BM) of Mn2+, Cr2+ and V2+

1.  Mn2+ > V2+ > Cr2+

2.  V2+ > Cr2+> Mn2+ 

3.  Mn2+ > Cr2+ > V2+ 

4.  Cr2+ > V2+ > Mn2+

View Answer  
4
Correct Answer :

Mn<sup>2+</sup> &gt; Cr<sup>2+</sup> &gt; V<sup>2+&nbsp;</sup><sup></sup>


Explanation :
No Explanation available for this question

A molecule (X ) has (i) four sigma bonds formed by the overlap of sp2 and s orbitals (ii) one sigma bond formed by sp2 and sp2 orbitals and (iii) one π bond formed by px

1.  C2H6

2.  C2H3Cl

3.  C2H2Cl2

4.  C2H4

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4
Correct Answer :

C<sub>2</sub>H<sub>4</sub>


Explanation :
No Explanation available for this question

Which of the following is used for making optical instruments

1.  SiO2

2.  Si

3.  SiH4

4.  SiC

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4
Correct Answer :

SiO<sub>2</sub>


Explanation :
No Explanation available for this question

Which of the following reactions can produce aniline as main product

1.  C6H5NO2 + Zn / KOH

2.  C6H5NO2 + Zn / NH4CL

3.  C6H5NO2 + LiAlH4

4.  C6H5NO2 + Zn / HCl

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4
Correct Answer :

C<sub>6</sub>H<sub>5</sub>NO<sub>2</sub> + Zn / HCl


Explanation :
No Explanation available for this question

Observe the following statements :I.    The physical and chemical properties of elements are periodic functions of their electronic configuration.II.   

1.  I, II and III are correct

2.  only I is correct

3.  only I and II is correct

4.  only II and III are correct

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4
Correct Answer :

only I is correct


Explanation :
No Explanation available for this question
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