ECAT Pre Engineering Chemistry Chapter 12 MCQ Test With Answer

Question # 1

Law of triads was given by:

Al-Razi A
Dobriener B
Newland C
Mendeleev D

Question # 2

Dobriener's was a scientist:

Russian A
German B
English C
French D

Question # 3

Element with higher oxidation state form oxides:

Acidic A
Basic B
Ampholetic C
Peroxides D

Question # 4

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 # 5

Sodium belongs to block of periodic table:

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

Question # 6

Newland gave his law in the year:

1829 A
1864 B
1871 C
1913 D

Question # 7

Modern Periodic table is based upon periodic function:

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

Question # 8

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 # 9

Properties of metal are:

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

Question # 10

the element not known till Mandleev tabulated his periodic table:

Carbon A
Hydrogen B
Aluminum C
Germanium D

Question # 11

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

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

Question # 12

Newland's was scientist:

Russian A
German B
English C
French D

Question # 13

Mendeleev gave his periodic law in the year:

1829 A
1864 B
1871 C
1913 D

Question # 14

Dobereiner gave his law in the year:

1829 A
1864 B
1871 C
1931 D

Question # 15

E.N. Value of fluorine is:

2.1 A
2.5 B
3.5 C
4.0 D

Question # 16

Ionization energy of sodium is (Kj/mol)

503 A
523 B
513 C
524 D

Question # 17

Alkali and alkaline earth metals are basic oxides except:

Li A
Be B
Fr C
Ba D

Question # 18

Mendeleev was a scientist:

Russioan A
German B
English C
French D

Question # 19

Electron affinity value from higher to heavier element:

Increase A
Decreases B
remains same C
Not effect D

Question # 20

Hydrides are:

Ionic A
Covalent B
Intermediate C
All above D

Question # 21

Oxidation state of boron, aluminium and gallium is:

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

Question # 22

Binary compounds of hydrogens are called:

Halides A
Hydrides B
Oxides C
Nitrides D

Question # 23

There were seven groups in periodic table proposed by:

Al-Razi A
Dobrierner B
Newland C
Mendeleev D

Question # 24

Periodic law was given by:

Al-Razi A
Dobriener B
Newland C
Mendeleev D

Question # 25

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

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

Question # 26

Law of octaves was given by:

Al-Razi A
Dobriener B
Newland C
Mendeleev D

Question # 27

Newland's gave law:

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

Question # 28

Hydration energy depends upon:

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

Question # 29

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 # 30

Newland said, every eight element repeats properties of element:

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

Sr.#	Question	Answer
1	Law of octaves was given by:	A. Al-Razi B. Dobriener C. Newland D. Mendeleev
2	Ionization energy of sodium is (Kj/mol)	A. 503 B. 523 C. 513 D. 524
3	Periodic law was given by:	A. Al-Razi B. Dobriener C. Newland D. Mendeleev
4	Atomic radius changes from top to bottom in a group.:	A. Increases B. Decreases C. Remains same D. Sometimes increases & Decreases
5	Alkali and alkaline earth metals are basic oxides except:	A. Li B. Be C. Fr D. Ba
6	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.
7	First of all, idea of groups and periods was introduced by:	A. Al-Razi B. Dobriener C. Newland D. Mendeleev
8	All facts of chemistry must be in simple logical patterns because chemistry is a subject:	A. Simple B. Complex C. Un-understandable D. Easy
9	Mosley gave his periodic law in the year:	A. 1829 B. 1864 C. 1871 D. 1913
10	Newland's was scientist:	A. Russian B. German C. English D. French

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