New chat PYQ Library Doubts Rank report

Sign in to see Recents

Sign in to save progress →

Some Basic Concepts of Chemistry question

2020 · 7 Jan · Shift 2 · Q17

Guest · try one question or challengeGuest · try one question or challenge

PYQ Library
JEE Main
Chemistry
Some Basic Concepts of Chemistry
2020 · 7 Jan · Shift 2 · Q17

Some Basic Concepts of Chemistry question

2020 · 7 Jan · Shift 2 · Q17

JEE MainChemistrySome Basic Concepts of ChemistryNumerical+4 / −1

The flocculation value of

HCl

for arsenic sulphide sol. is 30 m mol L-1 If

H_2SO_4

is used for the flocculatiopn of arsenic sulphide, the amount in grams, of

H_2SO_4

in 250 ml required for the above purposed is

\underline{\hspace{2cm}}

. (molecular mass of

H_2SO_4

= 98 g/mol)

Numerical answer

More from Some Basic Concepts of Chemistry

The ammonia ( $N H_{3}$ ) released on quantitative reaction of 0.6 g urea ( $N H_{2} C O N H_{2}$ ) with sodium hydroxide ( $N a O H$ ) can be neutralized by :2020 · MCQ
The volume (in mL) of 0.125 M $A g N O_{3}$ required to quantitatively precipitate chloride ions in 0.3 g of $[C o (N H_{3})_{6}] C l_{3}$ is . M $[C o (N H_{3})_{6} C l_{3}]$ = 267.46 g/mol M $A g N O_{3}$ = 169.87 g/mol2020 · Numerical
Ferrous sulphate heptahydrate is used to fortify foods with iron. The amount (in grams) of the salt required to achieve 10 ppm of iron in 100 kg of wheat is . Atomic weight : Fe = 55.85; S = 32.00; O = 16.002020 · Numerical
The molarity of $H N O_{3}$ in a sample which has density 1.4 g/mL and mass percentage of 63% is . (Molecular Weight of $H N O_{3}$ = 63)2020 · Numerical
The hardness of a water sample containing 10–3 M $M g S O_{4}$ expressed as $C a C O_{3}$ equivalents (in ppm) is . (molar mass of $M g S O_{4}$ is 120.37 g/mol)2020 · Numerical
10.30 mg of $O_{2}$ is dissolved into a liter of sea water of density 1.03 g/mL. The concentration of $O_{2}$ in ppm is .2020 · Numerical
The percentage composition of carbon by mole in methane is :2019 · MCQ
For a reaction, $N_{2}$ (g) + 3 $H_{2}$ (g) $\to$ 2 $N H_{3}$ (g) ; identify dihydrogen ( $H_{2}$ ) as a limiting reagent in the following reaction mixtures.2019 · MCQ