ECAT Pre Engineering Chemistry Chapter 12 MCQ Test With Answer

Question # 1

Oxidation state of boron, aluminium and gallium is:

+1 A
+2 B
+3 C
+5 D

Question # 2

Dobereiner gave his law in the year:

1829 A
1864 B
1871 C
1931 D

Question # 3

There were seven groups in periodic table proposed by:

Al-Razi A
Dobrierner B
Newland C
Mendeleev D

Question # 4

Newland gave his law in the year:

1829 A
1864 B
1871 C
1913 D

Question # 5

Ionization energy of sodium is (Kj/mol)

503 A
523 B
513 C
524 D

Question # 6

Period Number 6 contains elements in it:

2 A
8 B
18 C
32 D

Question # 7

Binary compounds of hydrogens are called:

Halides A
Hydrides B
Oxides C
Nitrides D

Question # 8

Newland's was scientist:

Russian A
German B
English C
French D

Question # 9

Mendeleev was a scientist:

Russioan A
German B
English C
French D

Question # 10

Mosley gave his periodic law in the year:

1829 A
1864 B
1871 C
1913 D

Question # 11

Law of triads was given by:

Al-Razi A
Dobriener B
Newland C
Mendeleev D

Question # 12

Which group elements are the least metallic in nature?

IV-A A
V-A B
VI-A C
VII-A D

Question # 13

Hydration energy depends upon:

Change of Ion A
Size of Ion B
Charge to size ratio C
Heat changes D

Question # 14

Hydrides are:

Ionic A
Covalent B
Intermediate C
All above D

Question # 15

Element with higher oxidation state form oxides:

Acidic A
Basic B
Ampholetic C
Peroxides D

Question # 16

Sodium belongs to block of periodic table:

S-Block A
p- block B
d- block C
f- bloci D

Question # 17

Oxidation state of an element in free state is:

Its numebr of elemtrons lost A
Its number of electrons gained B
zero C
Its number of electrons shared D

Question # 18

Alkali and alkaline earth metals are basic oxides except:

Li A
Be B
Fr C
Ba D

Question # 19

Scientist(s) made contributions in the field designing a periodic table

Newland A
Dobriener B
Mendeleev & Mosley C
All of these D

Question # 20

Electron affinity value from higher to heavier element:

Increase A
Decreases B
remains same C
Not effect D

Question # 21

First of all, idea of groups and periods was introduced by:

Al-Razi A
Dobriener B
Newland C
Mendeleev D

Question # 22

Law of octaves was given by:

Al-Razi A
Dobriener B
Newland C
Mendeleev D

Question # 23

All facts of chemistry must be in simple logical patterns because chemistry is a subject:

Simple A
Complex B
Un-understandable C
Easy D

Question # 24

Mendeleev gave his periodic law in the year:

1829 A
1864 B
1871 C
1913 D

Question # 25

Modern Periodic table is based upon periodic function:

Atomic mass A
Mass number B
Nuclide Number C
Atomic number D

Question # 26

Periodic law was given by:

Al-Razi A
Dobriener B
Newland C
Mendeleev D

Question # 27

Mark the correct statement:

All lanthanides are present in the same period. A
all halogens are present in he same period. B
All the alkali metals are present in the same group. C
All the noble gases are present in the same period. D

Question # 28

Atomic radius changes from top to bottom in a group.:

Increases A
Decreases B
Remains same C
Sometimes increases & Decreases D

Question # 29

Properties of metal are:

Malleable and ductile A
Form basic oxides B
Tamish in air C
All are true D

Question # 30

E.N. Value of fluorine is:

2.1 A
2.5 B
3.5 C
4.0 D

Sr.#	Question	Answer
1	Oxidation state of an element in free state is:	A. Its numebr of elemtrons lost B. Its number of electrons gained C. zero D. Its number of electrons shared
2	Law of octaves was given by:	A. Al-Razi B. Dobriener C. Newland D. Mendeleev
3	Modern Periodic table is based upon periodic function:	A. Atomic mass B. Mass number C. Nuclide Number D. Atomic number
4	Period Number 6 contains elements in it:	A. 2 B. 8 C. 18 D. 32
5	Properties of metal are:	A. Malleable and ductile B. Form basic oxides C. Tamish in air D. All are true
6	Hydrides are:	A. Ionic B. Covalent C. Intermediate D. All above
7	Scientist(s) made contributions in the field designing a periodic table	A. Newland B. Dobriener C. Mendeleev & Mosley D. All of these
8	Mendeleev gave his periodic law in the year:	A. 1829 B. 1864 C. 1871 D. 1913
9	Mendeleev was a scientist:	A. Russioan B. German C. English D. French
10	Newland's was scientist:	A. Russian B. German C. English D. French

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