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Introduction to Analytical Chemistry Chemistry - Introduction to Analytical Chemistry

Maharashtra Board - STD 11 - Chemistry (MSBSHSE - Semi English Medium). 108 questions in this chapter.

Question types

Introduction to Analytical Chemistry question types

108 questions across 5 question groups — pick any mix to generate a Chemistry paper with step-by-step answer keys.

108
Questions
5
Question groups
5
Question types
Sample Questions

Introduction to Analytical Chemistry questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1MCQ1 Mark
When two properties of a system are mathematically related to each other, the relation can be deduced by
  • A
    Working out mean deviation
  • ✓
    Plotting a graph
  • C
    Calculating relative error
  • D
    all the above three

Answer: B.

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Q 2MCQ1 Mark
In $CuSO _4 5 H _2 O$ the percentage of water is ……(Cu = 63.5, S = 32, O = 16, H = 1)
  • A
    10%
  • ✓
    36%
  • C
    60%
  • D
    72%

Answer: B.

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Q 3MCQ1 Mark
How many grams of oxygen will be required to react completely with 27 g of Al? (Atomic mass : Al = 27, O = 16)
  • A
    8
  • B
    16
  • ✓
    24
  • D
    32

Answer: C.

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Q 4MCQ1 Mark
The hydrocarbon contains 79.87 % carbon and 20.13 % of hydrogen. What is its empirical formula ?
  • A
    CH
  • B
    CH2
  • ✓
    CH3
  • D
    C2H5

Answer: C.

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Q 5MCQ1 Mark
Two elements A (At. mass 75) and B (At. mass 16) combine to give a compound having 75.8 % of A. The formula of the compound is
  • A
    $A B$
  • B
    $A _2 B$
  • C
    $AB _2$
  • ✓
    $A _2 B_3$

Answer: D.

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Q 12Answer the following in one or two sentences.2 Marks
State TRUE or FALSE. Correct the statement if false.
i. A majority of reactions in the laboratory are carried out in in gaseous forms.
ii. Molarity is the most widely used to express the concentration of solution.
iii. Molality of a solution changes with temperature.
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Q 16Answer the following in brief.3 Marks
Round off each of the following quantities to three significant figures :
a. $1.43 cm^3$
b. $458 \times 10^2 cm$
c. $643 cm^2$
d. $0.039 m$
e. $6.398 \times 10^{-3} km$
f. $0.0179 g$
g. $79,000 m$
h. $42,150$
i. $649.85$
j. $23,642,000 mm$
k. $0.0041962 kg$
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Q 18Answer the following in brief.3 Marks
How many significant figures are in each of the following quantities ?
a. $45.26 ft$
b. $0.109 in$
c. $0.00025 kg$
d. $2.3659 \times 10^{-8} cm$
e. $52.0 cm^3$
f. $0.00020 kg$
g. $8.50 \times 10^4 mm$
h. $300.0 cg$
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Q 25Answer the following questions.4 Marks
Express the following sum to appropriate number of significant figures:
a. $2.3 \times 10^3 mL+4.22 \times 10^4 mL+9.04 \times 10^3 mL+8.71 \times 10^5 mL$;
b. $319.5 g-20460 g-0.0639 g-45.642 g-4.173 g$
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