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JEE Main 2023 (Online) 15th April Morning Shift
Numerical
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$20 \mathrm{~mL}$ of $0.5 \mathrm{M} ~\mathrm{NaCl}$ is required to coagulate $200 \mathrm{~mL}$ of $\mathrm{As}_{2} \mathrm{S}_{3}$ solution in 2 hours. The coagulating value of $\mathrm{NaCl}$ is ____________ .
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2
JEE Main 2023 (Online) 11th April Evening Shift
Numerical
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The number of correct statements about modern adsorption theory of heterogeneous catalysis from the following is __________

A. The catalyst is diffused over the surface of reactants.

B. Reactants are adsorbed on the surface of the catalyst.

C. Occurrence of chemical reaction on the catalyst's surface through formation of an intermediate.

D. It is a combination of intermediate compound formation theory and the old adsorption theory.

E. It explains the action of the catalyst as well as those of catalytic promoters and poisons.

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3
JEE Main 2023 (Online) 8th April Evening Shift
Numerical
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Coagulating value of the electrolytes $$\mathrm{AlCl}_{3}$$ and $$\mathrm{NaCl}$$ for $$\mathrm{As}_{2} \mathrm{S}_{3}$$ are 0.09 and 50.04 respectively. The coagulating power of $$\mathrm{AlCl}_{3}$$ is $$x$$ times the coagulating power of $$\mathrm{NaCl}$$. The value of $$\underline{x}$$ is ___________.

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4
JEE Main 2023 (Online) 6th April Evening Shift
Numerical
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The number of colloidal systems from the following, which will have 'liquid' as the dispersion medium, is ___________.

Gem stones, paints, smoke, cheese, milk, hair cream, insecticide sprays, froth, soap lather

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