MCQ
Oxygen was discovered by
- ✓Priestley
- BBoyle
- CScheele
- DCavandish
✓
Answer
Correct option: A.
Priestley
a
Oxygen is discovered by joseph Priestley in wilt shire, England in $1772$.
Oxygen is discovered by joseph Priestley in wilt shire, England in $1772$.
The name of Oxygen comes from the Greek'Oxygenes meaning acidforming.
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
Correct order of bond dissociation energy
Select the incorrect graph for velocity of $e^-$ in an orbit vs. $ Z, \frac {1}{n}$ and $n$
→Above conversion can be done by
The energy of a radiation of wavelength $8000\,\mathop A\limits^o $ is ${E_1}$ and energy of a radiation of wavelength $16000 \,\mathop A\limits^o$ is ${E_2}$. What is the relation between these two
→Compound $PdCl_4.6H_2O$ is a hydrated complex; $1$ molal aqueous solution of it has freezing point $269.28\ K$ . Assuming $100\%$ ionization of complex, calculate the molecular formula of the complex ($K_f$ for water $ = 1.86\ K\ kg\,mol^{-1}$)
→For the following reactions.....$kJ/mol$
→$\mathrm{A} \stackrel{700 \mathrm{K}}{\rightarrow}$ Product
$\mathrm{A}\xrightarrow[\text { catalyst }]{500 \mathrm{K}} $ Product
it was found that $\mathrm{E}_{\mathrm{a}}$ is decreased by $30 \;\mathrm{kJ} / \mathrm{mol}$ in the presence of catalyst.
If the rate remains unchanged, the activation energy for catalysed reaction is (Assume pre exponential factor is same $):$
Correct sequence of $CO$ bond order in given compounds is :
→$(P)\, Fe(CO)_5\,\,\, (Q)\,CO\,\,\, (R)\, H_3B \leftarrow CO\,\,\,(S)\, [Mn(CO)_5]^-$
The $IUPAC$ name of $\begin{matrix}
OH\,\,\, \\
|\,\,\,\,\,\,\,\,\, \\
C{{H}_{3}}-CH-COOH \\
\end{matrix}$ is
→OH\,\,\, \\
|\,\,\,\,\,\,\,\,\, \\
C{{H}_{3}}-CH-COOH \\
\end{matrix}$ is
Which of the following statements about anhydrous aluminium chloride is correct?
Which is correct