89
Q:

SI unit of equivalent conductance

A) ohm/cm B) Siemens m2/equivalent
C) Siemens/equivalent D) mho/cm

Answer:   B) Siemens m2/equivalent



Explanation:

SI_unit_of_equivalent_conductance1556274980.jpg image

 

Equivalent conductance is defined as the conductance of an electrolyte solution containing one gram equivalent of the electrolyte. It is equal to the product of specific conductance (k) of the solution and the volume (V) of the solution that contains one gram equivalent of the electrolyte.

 

 λ = k x V

 

Unit of spceific conductance k is Siemens / m.

 

Volume of the solution V is m3

 

Now, required equivalent conductance unit is Siemens.m2/equivalent .

Subject: Chemistry
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Q:

Which substance is produced when alcohol is added with petrol and used as a fuel?

 

A) Only oxygen B) Only carbon-dioxide
C) Only water D) Carbon-dioxide and water both
 
Answer & Explanation Answer: B) Only carbon-dioxide

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1 34
Q:

Isotopes have ______.

 

I. similar physical quantities and different chemical properties

II. different physical properties

III. similar chemical properties

 

A) Only I and II B) Only I and III
C) Only II and III D) All I, II and III
 
Answer & Explanation Answer: C) Only II and III

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Q:

Which of the below options is called a laughing gas?

A) N2O B) CO2
C) H2O D) SO2
 
Answer & Explanation Answer: A) N2O

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Q:

If the first and third members of a Dobereiner triad are Phosphorous and Antimony, the second member of this triad is

A) Calcium B) Iodine
C) Arsenic D) Sulphur
 
Answer & Explanation Answer: C) Arsenic

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1 57
Q:

Which of the following allotropes of Carbon is used as a reducing agent in metallurgy?

A) Carbon Black B) Graphite
C) Charcoal D) Coke
 
Answer & Explanation Answer: D) Coke

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Q:

How many atoms will one mole of Carbon (C-12) contain?

A) 6.02 x 1023 B) 8.06 x 1020
C) 6.02 x 1026 D) 60.20 x 1026
 
Answer & Explanation Answer: A) 6.02 x 1023

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Q:

The pH of a solution, whose hydrogen ion concentration is 1 x 10 mole per litre, will be ____.

A) 7 B) 5
C) 4 D) 6
 
Answer & Explanation Answer: B) 5

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0 122
Q:

Which of the following is used for disinfecting drinking water?

A) Baking powder B) Bleaching powder
C) Washing soda D) Baking soda
 
Answer & Explanation Answer: B) Bleaching powder

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