MCQ
Chemical hypothesis first emerged in Classical Greece by:
- AEinstein
- BLouis Pasteur
- CAristotle
- DLeuweenhock
✓
Answer
- Aristotle
Explanation:
A basic chemical hypothesis first emerged in Classical Greece with the theory of four elements as propounded definitively by Aristotle stating that the fire, air, earth and water were the fundamental elements.Everything is formed from a combination of two or more of these elements.
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 number of unpaired electrons in a chromic ion $C{r^{3 + }}$ (atomic number $= 24$) is
→Ethyne on reaction with dil. ${H_2}S{O_4}$ and $Hg({\rm{II}})$ gives
→The reaction $\mathop {\mathop {\mathop {\mathop {C{H_3} - C - C{H_3}}\limits^{\,|} }\limits^{\,\,\,\,\,\,\,C{H_3}} }\limits_{|\,} }\limits_{OH} \xrightarrow{H_2SO_4} \mathop {\mathop {C{H_3} - C = C{H_2}}\limits^{\,|} }\limits^{\,\,\,\,\,\,\,C{H_3}} $ is the example of
→Consider the following electronic configuration of an element $(P)$ :
$[Xe]4f^{14}\, 5d^1\, 6s^2$
Then correct statement about element $'P'$ is
→$[Xe]4f^{14}\, 5d^1\, 6s^2$
Then correct statement about element $'P'$ is
The electron probability distribution around a group of nuclei in a molecule is given by:
Equation ${H_2}S + {H_2}{O_2} \to S + 2{H_2}O$ represents
→Uncertainty in position and momentum are equal. Uncertainty in velocity is :-
The specific heat of a metal is $ 0.16$ its approximate atomic weight would be
→How many isomers are possible for the following molecule ?
Assertion : Sigma $(\sigma )$ is a strong bond, while pi $(\pi )$ is a weak bond.
Reason : Atoms rotate freely about pi $(\pi )$ bond.
→Reason : Atoms rotate freely about pi $(\pi )$ bond.