MCQ
An example for a strong electrolyte is
- AUrea
- BAmmonium hydroxide
- CSugar
- ✓Sodium acetate
${H_2}O$ $ \rightleftharpoons $ ${H^ + } + O{H^ - }$
$C{H_3}COOH + NaOH$
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$A$. Atoms of all elements are composed of two fundamental particles.
$B$. The mass of the electron is $9.10939 \times 10^{-31} kg$.
$C$. All the isotopes of a given element show same chemical properties:
$D$. Protons and electrons are collectively known as nucleons.
$E$. Dalton's atomic theory, regarded the atom as an ultimate particles of matter Choose the correct answer from the options given below
(atomic number : $\mathrm{Xe}=54, \mathrm{Ce}=58, \mathrm{Eu}=63$ )