ALL IN ONE ISC Chemistry CLASS 11>Chapter 1 - Some Basic Concepts of Chemistry>Chapter Practice>Q 2

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The sulphate of a metal $M$ contains $9.87 %$ of $M$ . The sulphate is isomorphous with ${ZnSO}_{4} . 7 H_{2} O$ . The atomic weight of $M$ is

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Important Questions on Some Basic Concepts of Chemistry

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IMPORTANT

ALL IN ONE ISC Chemistry CLASS 11>Chapter 1 - Some Basic Concepts of Chemistry>Chapter Practice>Q 2

The equivalent weight of

H_{3} {PO}_{2}

, when it disproportionates into

{PH}_{3}

, and

H_{3} {PO}_{4}

, is

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ALL IN ONE ISC Chemistry CLASS 11>Chapter 1 - Some Basic Concepts of Chemistry>Chapter Practice>Q 2

How much mass of

NaOH

is required to neutralise

1500 {cm}^{3}

of

0.1 N HCl

?

(Na = 23)

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ALL IN ONE ISC Chemistry CLASS 11>Chapter 1 - Some Basic Concepts of Chemistry>Chapter Practice>Q 2

$5 mL of 1 N HCl, 20 mL$ of $N / 2 H_{2} {SO}_{4}$ and $30 mL$ of $N / 3 {HNO}_{3}$ are mixed together and volume made up to $1 L$ . The normality of resulting solution is

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ALL IN ONE ISC Chemistry CLASS 11>Chapter 1 - Some Basic Concepts of Chemistry>Chapter Practice>Q 2

If

0.5

moles of

{BaCl}_{2}

are mixed with

0.2

moles of

{Na}_{3} {PO}_{4}

, the maximum number of moles of

{Ba}_{3} ({PO}_{4})_{2}

that can be formed, is

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ALL IN ONE ISC Chemistry CLASS 11>Chapter 1 - Some Basic Concepts of Chemistry>Chapter Practice>Q 2

The empirical formula and molecular mass of a compound are

{CH}_{2} O

and

180 g

respectively. What will be the molecular formula of the compound?

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ALL IN ONE ISC Chemistry CLASS 11>Chapter 1 - Some Basic Concepts of Chemistry>Chapter Practice>Q 4

What is the mass in gram of one molecule of caffeine

(C_{8} H_{10} N_{4} O_{2})

?

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ALL IN ONE ISC Chemistry CLASS 11>Chapter 1 - Some Basic Concepts of Chemistry>Chapter Practice>Q 5

Calculate the number of moles of sulphur in $64 g$ of sulphur.

Note: This question was incomplete.

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11th ICSE

IMPORTANT

ALL IN ONE ISC Chemistry CLASS 11>Chapter 1 - Some Basic Concepts of Chemistry>Chapter Practice>Q 6

Explain, why diamond is considered as an element, not as a compound?