ECAT Pre Engineering Chemistry Chapter 12 MCQ Test With Answer

Question # 1

the element not known till Mandleev tabulated his periodic table:

Carbon A
Hydrogen B
Aluminum C
Germanium D

Question # 2

Dobriener's was a scientist:

Russian A
German B
English C
French D

Question # 3

Law of triads was given by:

Al-Razi A
Dobriener B
Newland C
Mendeleev D

Question # 4

The periodic function of properties of elements is their atomic number

Al-Razi A
Mosley B
Newland C
Mendeleev D

Question # 5

Periodic law was given by:

Al-Razi A
Dobriener B
Newland C
Mendeleev D

Question # 6

Electron affinity value from higher to heavier element:

Increase A
Decreases B
remains same C
Not effect D

Question # 7

Newland said, every eight element repeats properties of element:

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

Question # 8

Newland gave his law in the year:

1829 A
1864 B
1871 C
1913 D

Question # 9

Ionization energy of sodium is (Kj/mol)

503 A
523 B
513 C
524 D

Question # 10

Element with higher oxidation state form oxides:

Acidic A
Basic B
Ampholetic C
Peroxides D

Question # 11

E.N. Value of fluorine is:

2.1 A
2.5 B
3.5 C
4.0 D

Question # 12

Hydrides are:

Ionic A
Covalent B
Intermediate C
All above D

Question # 13

Oxidation state of boron, aluminium and gallium is:

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

Question # 14

Period Number 6 contains elements in it:

2 A
8 B
18 C
32 D

Question # 15

Modern Periodic table is based upon periodic function:

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

Question # 16

Dobereiner gave his law in the year:

1829 A
1864 B
1871 C
1931 D

Question # 17

Sodium belongs to block of periodic table:

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

Question # 18

Mosley gave his periodic law in the year:

1829 A
1864 B
1871 C
1913 D

Question # 19

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 # 20

Alkali and alkaline earth metals are basic oxides except:

Li A
Be B
Fr C
Ba D

Question # 21

Newland's gave law:

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

Question # 22

Binary compounds of hydrogens are called:

Halides A
Hydrides B
Oxides C
Nitrides D

Question # 23

Properties of metal are:

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

Question # 24

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

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

Question # 25

There were seven groups in periodic table proposed by:

Al-Razi A
Dobrierner B
Newland C
Mendeleev D

Question # 26

Which group elements are the least metallic in nature?

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

Question # 27

Mendeleev gave his periodic law in the year:

1829 A
1864 B
1871 C
1913 D

Question # 28

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

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

Question # 29

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 # 30

Mendeleev was a scientist:

Russioan A
German B
English C
French 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	Newland's gave law:	A. Triad's law B. Octaves law C. Period law D. Moderen periodic law
3	Mendeleev was a scientist:	A. Russioan B. German C. English D. French
4	Alkali and alkaline earth metals are basic oxides except:	A. Li B. Be C. Fr D. Ba
5	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.
6	Newland's was scientist:	A. Russian B. German C. English D. French
7	Dobereiner gave his law in the year:	A. 1829 B. 1864 C. 1871 D. 1931
8	Element with higher oxidation state form oxides:	A. Acidic B. Basic C. Ampholetic D. Peroxides
9	Dobriener's was a scientist:	A. Russian B. German C. English D. French
10	Scientist(s) made contributions in the field designing a periodic table	A. Newland B. Dobriener C. Mendeleev & Mosley D. All of these

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