$CF_xCl_y$ (where $x + y = 4$). These compounds are not used because
- AThese are fluoro carbons
- BThese are difficult to synthesise
- CThey deplete ozone layer
- DNone of these
Explore More
Similar Questions
Match the following List-$I$ ($F^-$ ion concentration in drinking water) with List-$II$ (Effects on humans):
List-$I$ List-$II$ $(A)$ $< 1 \ ppm$ $(i)$ Harmful to bones $(B)$ $> 2 \ ppm$ $(ii)$ Tooth decay $(C)$ $> 10 \ ppm$ $(iii)$ Brown mottling of teeth
Then the correct match is:
| List-$I$ | List-$II$ |
|---|---|
| $(A)$ $< 1 \ ppm$ | $(i)$ Harmful to bones |
| $(B)$ $> 2 \ ppm$ | $(ii)$ Tooth decay |
| $(C)$ $> 10 \ ppm$ | $(iii)$ Brown mottling of teeth |
Then the correct match is:
Match the following metals in drinking water with their maximum prescribed concentration in $ppm$:
List-$I$ (Metal) List-$II$ (Concentration in $ppm$) $A$. $Mn$ $I$. $0.05$ $B$. $Zn$ $II$. $5.0$ $C$. $Cd$ $III$. $0.005$ $D$. $Cu$ $IV$. $3.0$
| List-$I$ (Metal) | List-$II$ (Concentration in $ppm$) |
|---|---|
| $A$. $Mn$ | $I$. $0.05$ |
| $B$. $Zn$ | $II$. $5.0$ |
| $C$. $Cd$ | $III$. $0.005$ |
| $D$. $Cu$ | $IV$. $3.0$ |
The decomposition of organic compounds in the presence of oxygen and without the formation of odoriferous substances is called:
The acids responsible for acid rain are ......... .
Medium
View SolutionWhich of the following principles of green chemistry suggests the use of chemicals made from plant-based sources?
Vedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo