Chemistry-Periodic Classification of Elements (NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension): Questions 1 - 6 of 23

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Question number: 1

» Chemistry » Periodic Classification of Elements

MCQ▾

Question

Who compared the properties of elements with notations of music and propounded ‘law of octaves’ for the classification of elements?

Choices

Choice (4) Response

a.

Newland

b.

Mendeleef

c.

Dobereiner

d.

Lothal Mayer

Question number: 2

» Chemistry » Periodic Classification of Elements

MCQ▾

Question

An element X forms and oxide X 2 O 3. In which group of Mendeleef s periodic table is this element located?

Choices

Choice (4) Response

a.

Group II

b.

Group III

c.

Group VIII

d.

Group V

Question number: 3

» Chemistry » Periodic Classification of Elements

MCQ▾

Question

Nitrogen is fixed in ecosystems in ways stated below. Which one of the statements below is false?

Choices

Choice (4) Response

a.

By cyanobacteria

b.

By denitrification

c.

By electrical discharges in the atmosphere

d.

By industrially synthesised fertiliser

Question number: 4

» Chemistry » Periodic Classification of Elements

MCQ▾

Question

An electron dot structure for an element shows that element’s symbol and an arrangement of dots that indicates the

Choices

Choice (4) Response

a.

total number of electrons

b.

atomic number

c.

atomic mass

d.

number of electrons in the outer energy level

Question number: 5

» Chemistry » Periodic Classification of Elements

MCQ▾

Question

What is the most correct name for the ionic compound formed by

Choices

Choice (4) Response

a.

Iron (IV) chloride

b.

Iron (II) chloride

c.

Iron (I) chloride

d.

Iron (III) chloride

Question number: 6

» Chemistry » Periodic Classification of Elements

Match List-Ⅰ List-Ⅱ▾

Question

Match the following:
List-Ⅰ (Reactants) List-Ⅱ (Products)

(A)

Equation

(i)

Equation

(B)

Equation

(ii)

Equation

(C)

Equation

(iii)

Equation

Choices

Choice (4) Response
  • (A)
  • (B)
  • (C)

a.

  • (i)
  • (iii)
  • (ii)

b.

  • (iii)
  • (i)
  • (ii)

c.

  • (iii)
  • (ii)
  • (i)

d.

  • (ii)
  • (iii)
  • (i)

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