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

Mendeleev gave his periodic law in the year:

1829 A
1864 B
1871 C
1913 D

Question # 3

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 # 4

Element with higher oxidation state form oxides:

Acidic A
Basic B
Ampholetic C
Peroxides D

Question # 5

There were seven groups in periodic table proposed by:

Al-Razi A
Dobrierner B
Newland C
Mendeleev D

Question # 6

Binary compounds of hydrogens are called:

Halides A
Hydrides B
Oxides C
Nitrides D

Question # 7

Hydration energy depends upon:

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

Question # 8

Newland said, every eight element repeats properties of element:

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

Question # 9

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

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

Question # 10

the element not known till Mandleev tabulated his periodic table:

Carbon A
Hydrogen B
Aluminum C
Germanium D

Question # 11

Hydrides are:

Ionic A
Covalent B
Intermediate C
All above 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

Mendeleev was a scientist:

Russioan A
German B
English C
French D

Question # 14

Law of octaves was given by:

Al-Razi A
Dobriener B
Newland C
Mendeleev D

Question # 15

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

Al-Razi A
Dobriener B
Newland C
Mendeleev D

Question # 16

E.N. Value of fluorine is:

2.1 A
2.5 B
3.5 C
4.0 D

Question # 17

Newland's gave law:

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

Question # 18

Newland gave his law in the year:

1829 A
1864 B
1871 C
1913 D

Question # 19

Law of triads 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

Alkali and alkaline earth metals are basic oxides except:

Li A
Be B
Fr C
Ba D

Question # 22

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

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

Question # 23

Electron affinity value from higher to heavier element:

Increase A
Decreases B
remains same C
Not effect D

Question # 24

Periodic law was given by:

Al-Razi A
Dobriener B
Newland C
Mendeleev D

Question # 25

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 # 26

Period Number 6 contains elements in it:

2 A
8 B
18 C
32 D

Question # 27

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 # 28

The periodic function of properties of elements is their atomic number

Al-Razi A
Mosley B
Newland C
Mendeleev D

Question # 29

Newland's was scientist:

Russian A
German B
English C
French D

Question # 30

Dobriener's was a scientist:

Russian A
German B
English C
French D

Sr.#	Question	Answer
1	Hydrides are:	A. Ionic B. Covalent C. Intermediate D. All above
2	Newland gave his law in the year:	A. 1829 B. 1864 C. 1871 D. 1913
3	Atomic radius changes from top to bottom in a group.:	A. Increases B. Decreases C. Remains same D. Sometimes increases & Decreases
4	Scientist(s) made contributions in the field designing a periodic table	A. Newland B. Dobriener C. Mendeleev & Mosley D. All of these
5	Ionization energy of sodium is (Kj/mol)	A. 503 B. 523 C. 513 D. 524
6	Electron affinity value from higher to heavier element:	A. Increase B. Decreases C. remains same D. Not effect
7	Mark the correct statement:	A. All lanthanides are present in the same period. B. all halogens are present in he same period. C. All the alkali metals are present in the same group. D. All the noble gases are present in the same period.
8	Dobriener's was a scientist:	A. Russian B. German C. English D. French
9	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
10	Mendeleev was a scientist:	A. Russioan B. German C. English D. French

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