ECAT Pre Engineering Chemistry Chapter 12 MCQ Test With Answer

Question # 1

Mendeleev was a scientist:

Russioan A
German B
English C
French D

Question # 2

Sodium belongs to block of periodic table:

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

Question # 3

Element with higher oxidation state form oxides:

Acidic A
Basic B
Ampholetic C
Peroxides D

Question # 4

Law of triads was given by:

Al-Razi A
Dobriener B
Newland C
Mendeleev D

Question # 5

Period Number 6 contains elements in it:

2 A
8 B
18 C
32 D

Question # 6

the element not known till Mandleev tabulated his periodic table:

Carbon A
Hydrogen B
Aluminum C
Germanium D

Question # 7

Properties of metal are:

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

Question # 8

Dobriener's was a scientist:

Russian A
German B
English C
French D

Question # 9

There were seven groups in periodic table proposed by:

Al-Razi A
Dobrierner B
Newland C
Mendeleev D

Question # 10

Periodic law was given by:

Al-Razi A
Dobriener B
Newland C
Mendeleev D

Question # 11

Modern Periodic table is based upon periodic function:

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

Question # 12

Newland's gave law:

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

Question # 13

Oxidation state of boron, aluminium and gallium is:

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

Question # 14

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

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

Question # 15

Ionization energy of sodium is (Kj/mol)

503 A
523 B
513 C
524 D

Question # 16

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

Al-Razi A
Dobriener B
Newland C
Mendeleev D

Question # 17

Which group elements are the least metallic in nature?

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

Question # 18

Dobereiner gave his law in the year:

1829 A
1864 B
1871 C
1931 D

Question # 19

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 # 20

Hydration energy depends upon:

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

Question # 21

Newland gave his law in the year:

1829 A
1864 B
1871 C
1913 D

Question # 22

Binary compounds of hydrogens are called:

Halides A
Hydrides B
Oxides C
Nitrides D

Question # 23

Newland said, every eight element repeats properties of element:

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

Question # 24

E.N. Value of fluorine is:

2.1 A
2.5 B
3.5 C
4.0 D

Question # 25

Mendeleev gave his periodic law in the year:

1829 A
1864 B
1871 C
1913 D

Question # 26

Alkali and alkaline earth metals are basic oxides except:

Li A
Be B
Fr C
Ba 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

Hydrides are:

Ionic A
Covalent B
Intermediate C
All above D

Question # 29

Mosley gave his periodic law in the year:

1829 A
1864 B
1871 C
1913 D

Question # 30

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

Sr.#	Question	Answer
1	Periodic law was given by:	A. Al-Razi B. Dobriener C. Newland D. Mendeleev
2	Dobriener's was a scientist:	A. Russian B. German C. English D. French
3	The periodic function of properties of elements is their atomic number	A. Al-Razi B. Mosley C. Newland D. Mendeleev
4	Hydration energy depends upon:	A. Change of Ion B. Size of Ion C. Charge to size ratio D. Heat changes
5	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
6	Element with higher oxidation state form oxides:	A. Acidic B. Basic C. Ampholetic D. Peroxides
7	Ionization energy of sodium is (Kj/mol)	A. 503 B. 523 C. 513 D. 524
8	Newland said, every eight element repeats properties of element:	A. 1st B. 2nd C. 3rd D. 4th
9	Period Number 6 contains elements in it:	A. 2 B. 8 C. 18 D. 32
10	There were seven groups in periodic table proposed by:	A. Al-Razi B. Dobrierner C. Newland D. Mendeleev

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