Download App

MODEL PAPER 7 — Chemistry STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceChemistryMODEL PAPER 73 Marks
Question
What do you understand by the term 'conductance'? What are its units?
✓

Answer

The reciprocal of electrical resistance is called conductance. It is usually represented by 'G'.
Thus $G=\frac{1}{R}$
Units: The units of conductance are reciprocal ohms written as
ohm ${ }^{-1}$ or mho
or siemens (S)
$
1 S=1 \Omega^{-1}
$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "3 Marks Question" from MODEL PAPER 7→MODEL PAPER 7 — all question types→Chemistry STD 12 Science question papers→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

Write chemical reaction to affect the following transformation.
(iii) Benzaldehyde to m-nitro benzaldehyde
→
Sucrose decomposes in acid solution into glucose and fructose according to the first order rate law, with $t_{1/2} = 3.00$ hours. What fraction of sample of sucrose remains after $8$ hours?
→
Calculate the emf of the cell
$Mg ( s )\left| Mg ^{+2}(0.1 M )\right| \mid Cu ^{+2}\left(1 \times 10^{-3} M \mid Cu ( s )\right)$
Given, $\left.E _{C u^{2+} / C u}^{\ominus}=+0.34 V, E _{M g^{+2} / M g}^{\ominus}=-2.37 V\right)$
→
Give structures of the products you would except when each of the following alcohols
$i.$ Butan$-1-ol$
$ii.\ 2-$Methylbutan$-2-ol$ react with
$a.\ HCI - ZnCl_2$
$b.\ HBr$ and
$c.\ SOCI_2$​​​​​​​
→
Giving an example for each describe the following reactions:
  1. Hofmann’s bromamide reaction.
  2. Gatterman reaction.
  3. A coupling reaction.
→
Write the names and structures of the monomers of the following polymers?
(i) Buna-S
(ii) Buna-N
(iii) Dacron
(iv) Neoprene
→
Calculate the amount of $KCl$ which must be added to $1 \ kg$ of water so that the freezing point is depressed by $2K. (K_f$ for water $= 1.86 K \ kg\ mol^{–1}).$
→
What are alcohol, phenol and ether compounds ?
→
Write chemical equations for the following conversions:
  1. Nitrobenzene to benzoic acid.
  2. Benzyl chloride to 2-phenylethanamine.
  3. Aniline to benzyl alcohol.
→
What happens when :
(a) Acetaldehyde is heated with Tollen's reagent.
(b) Ethyl ethanoate is boiled with KOH aq.
(c) Toluene is heated with chromyl chloride in $CS _2$ and the product is hydrolysed.
(d) Crotonaldehyde is treated with $LiAlH _4$ dry ether and the product is acid hydrolysed.
→