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OTI365 - NTSE - X Standard
NTSE SAT Chemistry - Classification of Elements Sample Question Paper with Answer

SAT Chemistry - Classification of Elements

Exam Duration: 45 Mins Total Questions : 30

1 )

Which one of the following elements exhibits maximum number of valence electrons?

(a)
Na
(b)
Al
(c)
Si
(d)
P

2 )

Which of the following gives the correct increasing order of the atomic radii of 0, F and N?

(a)
O, F, N
(b)
N, F, O
(c)
O, N, F
(d)
F, O, N

3 )

Which of the following elements does not lose an electron easily?

(a)
Na
(b)
F
(c)
Mg
(d)
Al

4 )

Arrange the following elements in the order of their decreasing metallic character: Na, Si, CI, Mg, AI

(a)
CI > Si > AI> Mg > Na
(b)
Na > Mg > AI > Si > CI
(c)
Na > AI > Mg > CI > Si
(d)
AI > Na > Si > Ca > Mg

5 )

Arrange the following elements in the order of their increasing non-metallic character: Li, O, C, Be, F

(a)
F < O< C < Be < Li
(b)
Li < Be < C < 0< F
(c)
F < O< C < Be < Li
(d)
F < O< Be < C < Li

6 )

Three elements B, Si and Ge are:

(a)
Metals
(b)
Non-metals
(c)
Metalloids
(d)
Metal, non-metal and metalloid respectively

7 )

The element with atomic number 14 is hard and forms acidic oxide and a covalent halide. To which of the following categories does the element be?

(a)
Metal
(b)
Metalloid
(c)
Non-metal
(d)
Left-hand side element

8 )

Which one of the following does not increase while moving down the group of the periodic table?

(a)
Atomic radius
(b)
Metallic character
(c)
Valence
(d)
Number of shells in an element

9 )

Which of the following set of elements is written in order of their increasing metallic character?

(a)
Be, Mg, Ca
(b)
Na, Li, K
(c)
Mg, Al, Si
(d)
C, O, N

10 )

According to Mendeleev's Periodic Law, the elements were arranged in the periodic table in the order of:

(a)
increasing atomic number
(b)
decreasing atomic number
(c)
increasing atomic masses
(d)
decreasing atomic masses

11 )

In Mendeleev's Periodic Table, gaps were left for the elements to be discovered later. Which of the following elements found a place in the periodic table later:

(a)
Germanium
(b)
Chlorine
(c)
Oxygen
(d)
Silicon

12 )

Which of the following statement (s) about the Modern Periodic Table are incorrect?
I.The elements in the Modern Periodic Table are arranged on the basis of their decreasing atomic number.
II. The elements in the Modern Periodic Table are arranged on the basis of their increasing atomic masses.
III. Isotopes are placed in adjoining group (s) in the Periodic Table.
IV. The elements in the Moder Periodic Table are arranged on the basis their increasing atomic number.

(a)
only
(b)
(i), (ii) and (iii)
(c)
(i), (ii) and (iv)
(d)
(iv) only

13 )

Which of the following statements about the Modern Periodic Table is correct?

(a)
It has 18 horizontal rows known as Periods
(b)
It has 7 vertical columns known as Periods
(c)
It has 18 vertical columns known as Groups
(d)
It has 7 horizontal rows known as Groups

14 )

The elements A, B, C, D and E have atomic number 9, 11, 17, 12 and 13 respectively. Which pair of elements belongs to the same group?

(a)
A and B
(b)
B and D
(c)
A and C
(d)
D and E

15 )

The number of electrons in the valence shell is equal to its _____________

(a)
atomic mass
(b)
group number
(c)
period number
(d)
atomic number

16 )

The family of elements having seven electrons in the outermost shell is ____________

(a)
alkali metals
(b)
alkaline earth metals
(c)
halogens
(d)
noble gases

17 )

Which of the following factors does not affect the metallic character of an element?

(a)
Atomic size
(b)
Ionisation potential
(c)
Electro negativity
(d)
Atomic radius

18 )

The family of elements to which potassium belongs is ____________

(a)
alkali metals
(b)
alkaline earth metals
(c)
halogens
(d)
noble gases

19 )

The modern periodic table is given by ____________

(a)
Mendeleev
(b)
Einstein
(c)
Bohr
(d)
Mosley

20 )

Elements belonging to groups 1 to 17 are called _____________

(a)
noble gases
(b)
normal elements
(c)
transition elements
(d)
inner transition elements

21 )

A liquid non-metal is ____________

(a)
phosphorous
(b)
mercury
(c)
bromine
(d)
nitrogen

22 )

The first alkali metal is ____________

(a)
hydrogen
(b)
lithium
(c)
sodium
(d)
francium

23 )

A purple coloured solid halogen is ___________

(a)
chlorine
(b)
bromine
(c)
iodine
(d)
astatine

24 )

Lanthanides and actinides are also called ___________

(a)
normal elements
(b)
transition elements
(c)
noble gases
(d)
inner transition elements

25 )

The least reactive element in group 17 is ____________

(a)
fluorine
(b)
chlorine
(c)
bromine
(d)
iodine

26 )

The valency of chlorine with respect to oxygen is _____________

(a)
1
(b)
3
(c)
5
(d)
7

27 )

The number of shells in the elements of 3^rd period is ____________ .

(a)
1
(b)
2
(c)
3
(d)
0

28 )

Six elements A, B, C, D, E and F have the following atomic numbers (A = 12;B = 17, C = 18,D = 7, E = 9 and F = 11). Among these elements, the element, which belongs to the 3rd period and has the highest ionisation potential, is __________ .