MCQ
Statement “Ozone in atmosphere is decreased by chloro-fluoro-carbon $(C{l_2}{F_2}C)$”
- ✓Is true
- BIs false
- COnly in presence of $C{O_2}$
- DOnly in absence of $C{O_2}$
✓
Answer
Correct option: A.
Is true
a
It’s obvious.
It’s obvious.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
The vapour pressure of pure liquid solvent is $0.50\,atm$ . When a non-volatile solute $B$ is added to the solvent, its vapour pressure drops to $0.30\,atm$ , thus mole fraction of the component $B$ is $......$
→Arrange the following in order of $C-Br$ bond strength in polar solvent.
→which is not correct about $(I)$
→$[Pt(NH_3) (NH_2OH) (H_2O) (py)]^+$ will form how many geometrical isomers
→The equivalents of ethylene diamine required to replace the neutral ligands from the coordination sphere of the trans-complex of $CoCl _{3} \cdot 4 NH _{3}$ ............ is (Round off to the Nearest Integer).
→$10\,mole$ of ferric oxalate is oxidised by $x$ mole of $MnO_4^-$ in acidic medium. The value of $'x'$ is
→Which of the following is most reactive for nucleophilic substitution reaction ?
The true statement amongst the following is
When a piece of wire of copper is dipped in $AgN{O_3}$ solution, the colour of the solution turns blue due to
→Which of the following statements are not correct?
→$A.$ The electron gain enthalpy of $F$ is more negative than that of $Cl$
$B.$ Ionization enthalpy decreases in a group of periodic table
$C.$ The electronegativity of an atom depends upon the atoms bonded to it.
$D.$ $Al _2 O _3$ and $NO$ are examples of amphoteric oxides.
Choose the most appropriate answer from the options given below: