Chemistry-Periodic Classification of Elements (NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension): Questions 6 - 10 of 23

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 1042 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 450.00 or

Question number: 6

» Chemistry » Periodic Classification of Elements

MCQ▾

Question

Consider the following statements

I. Group 3 elements are called pnictogens.

II. Group 16 elements are called halogens.

Which of the above statement (s) is /are correct?

Choices

Choice (4) Response
a.

I and II

b.

Only II

c.

Only I

d. None of the above

Question number: 7

» 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: 8

» 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: 9

» Chemistry » Periodic Classification of Elements

Match List-Ⅰ List-Ⅱ▾

Question

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

(A)

2Al(s)+6HCl(aq)

(i)

2KOH

(B)

Na2O(s)+H2O(l)

(ii)

2NaOH

(C)

K2O(s)+H2O(l)

(iii)

2AlCl3(aq)+3H2(g)

Choices

Choice (4) Response
  • (A)
  • (B)
  • (C)
a.
  • (i)
  • (iii)
  • (ii)
b.
  • (iii)
  • (ii)
  • (i)
c.
  • (iii)
  • (i)
  • (ii)
d.
  • (ii)
  • (iii)
  • (i)

Question number: 10

» Chemistry » Periodic Classification of Elements

MCQ▾

Question

Fe2O3+2Al>Al2O3+2Fe

Mg(s)+2HCl(aq)>MgCl2(aq)+H2(g)

The above two reactions are the example of

Choices

Choice (4) Response
a.

decomposition reaction

b.

double displacement reaction

c.

displacement reaction

d.

redox reaction

Sign In