ECAT Pre Engineering Chemistry Chapter 12 MCQ Test With Answer

Question # 1

Hydrides are:

Ionic A
Covalent B
Intermediate C
All above D

Question # 2

Oxidation state of boron, aluminium and gallium is:

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

Question # 3

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

Al-Razi A
Dobriener B
Newland C
Mendeleev D

Question # 4

Newland gave his law in the year:

1829 A
1864 B
1871 C
1913 D

Question # 5

Alkali and alkaline earth metals are basic oxides except:

Li A
Be B
Fr C
Ba D

Question # 6

Sodium belongs to block of periodic table:

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

Question # 7

Element with higher oxidation state form oxides:

Acidic A
Basic B
Ampholetic C
Peroxides D

Question # 8

Dobereiner gave his law in the year:

1829 A
1864 B
1871 C
1931 D

Question # 9

Law of triads was given by:

Al-Razi A
Dobriener B
Newland C
Mendeleev D

Question # 10

Newland's gave law:

Triad's law A
Octaves law B
Period law C
Moderen periodic law D

Question # 11

Newland said, every eight element repeats properties of element:

1st A
2nd B
3rd C
4th D

Question # 12

Newland's was scientist:

Russian A
German B
English C
French D

Question # 13

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

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

Question # 14

Periodic law was given by:

Al-Razi A
Dobriener B
Newland C
Mendeleev D

Question # 15

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 # 16

Mendeleev gave his periodic law in the year:

1829 A
1864 B
1871 C
1913 D

Question # 17

Mosley gave his periodic law in the year:

1829 A
1864 B
1871 C
1913 D

Question # 18

Hydration energy depends upon:

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

Question # 19

Law of octaves was given by:

Al-Razi A
Dobriener B
Newland C
Mendeleev D

Question # 20

Properties of metal are:

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

Question # 21

Which group elements are the least metallic in nature?

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

Question # 22

the element not known till Mandleev tabulated his periodic table:

Carbon A
Hydrogen B
Aluminum C
Germanium D

Question # 23

Ionization energy of sodium is (Kj/mol)

503 A
523 B
513 C
524 D

Question # 24

E.N. Value of fluorine is:

2.1 A
2.5 B
3.5 C
4.0 D

Question # 25

Mendeleev was a scientist:

Russioan A
German B
English C
French D

Question # 26

Dobriener's was a scientist:

Russian A
German B
English C
French D

Question # 27

Modern Periodic table is based upon periodic function:

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

Question # 28

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 # 29

Period Number 6 contains elements in it:

2 A
8 B
18 C
32 D

Question # 30

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

Simple A
Complex B
Un-understandable C
Easy D

Sr.#	Question	Answer
1	Periodic law was given by:	A. Al-Razi B. Dobriener C. Newland D. Mendeleev
2	Which group elements are the least metallic in nature?	A. IV-A B. V-A C. VI-A D. VII-A
3	Hydrides are:	A. Ionic B. Covalent C. Intermediate D. All above
4	Properties of metal are:	A. Malleable and ductile B. Form basic oxides C. Tamish in air D. All are true
5	All facts of chemistry must be in simple logical patterns because chemistry is a subject:	A. Simple B. Complex C. Un-understandable D. Easy
6	First of all, idea of groups and periods was introduced by:	A. Al-Razi B. Dobriener C. Newland D. Mendeleev
7	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
8	Atomic radius changes from top to bottom in a group.:	A. Increases B. Decreases C. Remains same D. Sometimes increases & Decreases
9	Newland said, every eight element repeats properties of element:	A. 1st B. 2nd C. 3rd D. 4th
10	Newland's was scientist:	A. Russian B. German C. English D. French

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