MCQ
$A{l_2}{O_3}$ formation involves evolution of a large quantity of heat, which makes its use in
- ✓Thermite welding
- BIndoor photography
- CConfectionary
- DDeoxidiser
✓
Answer
Correct option: A.
Thermite welding
a
(a) In thermite welding large quantity of heat is used which is evolved during $A{l_2}{O_3}$ formation.
(a) In thermite welding large quantity of heat is used which is evolved during $A{l_2}{O_3}$ formation.
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
Amongst $LiCl, BeCl_2, MgCl_2$ and $RbCl$ the compounds with greatest and least ionic character, respectively are
→The incorrect order of lattice energy is
The volume of $0.1\, N$ dibasic acid sufficient to neutralize $1\, g$ of a base that furnishes $0.04\, mole$ of $OH^-$ in aqueous solution is ............ $\mathrm{mL}$
→Which of the following can show Geometrical isomerism
The wave number of last line of Lyman series of atomic spectrum of $H$ atom correspond to :-
→For the process, $\ce{H_2O(l) \rightarrow H_2O(g) }$ at $T = 100^\circ C$ and $1$ atm, the correct choice is :
→van't-Hoff factor $(i)$ for this reaction is
→Which one of the following is not the characteristic of Planck's quantum theory of radiation
$10\ gm\ NaHCO_3(s)$ sample is heated in open to constant weight, the residue is titrated gainst $0.1\,M \ HCl$ in presence of phenolphathalein as an indicator, $500\ ml$ of acid was required to reach end point hence $\%$ purity of sample is ............... $\%$
→The ionization energy of sodium in $\mathrm{kJ} \mathrm{mol}^{-1}$. If electromagnetic radiation of wavelength $242 \mathrm{~nm}$ is just sufficient to ionize sodium atom is____.
→