Biology/Biology MCQ Question - Periodic Classification Sample Test,Sample questions

Question:
Acetic anhydride can be obtained by treating ethyl alcohol with

1.P2O5

2.H2SO4

3.Both a and b

4.PCI5


Question:
Addition of 2nd electron to a uninegative ion is always

1.Exothermic

2.Endothermic

3.Data is insufficient

4.Unpredictable


Question:
Allotropic form of phosphorus that is poisonous is

1.White

2.Red

3.Black

4.Violet


Question:
Amphoteric exides are those which possess ________ properties

1.Acidic

2.Basic

3.Acidic and basic

4.Neutral and acidic


Question:
An element has electronic conviguration 1s2 2s2 2p2. It belongs to

1.Group II-A

2.Group IV-A

3.Group VII-A

4.Group VI-A


Question:
Best position of hydrogen in the periodic table is above I.A Group which is mainly due to

1.Both are electropositive

2.Similar outer most shell electronic configuration

3.Both form ionic compounds

4.All


Question:
Compounds of nitrogen and phosphorus are mostly

1.ionic

2.covalent

3.polar

4.all varieties are possible


Question:
Deuterium reacts with oxygen to form

1.Hard water

2.Heavy water

3.Soft water

4.Water gas


Question:
Halides in which halogen atoms act as a bridge between two atoms of the other element are called

1.Covalent halides

2.Electronegative halides

3.Polymeric halides

4.Polymeric hydrides


Question:
Higher value of electron affinity means

1.Atom will lose electron easily

2.Atom will gain electron easily

3.Atom may form di-positive ion

4.The reason is unknown


Question:
Hydrogen resembles with carbon because of having

1.Same number of electrons in the valence shell

2.Similar physical state

3.Remarkable reducing properties

4.Homovalent (show same valency)


Question:
In which of the following pairs are elements belonging to the same group?

1.Boron & Beryllium

2.Nitrogen & Phosphorous

3.Magnesium & Aluminium

4.Gallium & Helium


Question:
Inner transition elements are called

1.Lanthanides

2.Actinides

3.Rare earth metals

4.All


Question:
Iodine is solid due to

1.Strong covalent bond

2.Large value of dipole moment

3.High polarizability

4.Strong hydrogen bonding


Question:
Ionization energy depends upon

1.Nuclear charge

2.Atomic size

3.Shielding effect

4.I.E depends upon all of the above and nature of orbital


Question:
Keeping in view the size of atom which order is correct one?

1.Mg > Sr

2.Ba > Mg

3.Lu > Ce

4.C1 > I


Question:
Less electronegative elements such as Be Ga A? etc form

1.Polymeric halide

2.Covalent halide

3.Ionic halide

4.All


Question:
Many properties of an element and its compounds can be predicted from the position of the element in the periodic table. What property could not be predicted in this way?

1.The nature of its oxides

2.The charge on its ions

3.The formula of its oxide

4.Its number of isotopes


Question:
Melting points of VII-A group elements down the group

1.Increase

2.Decrease

3.Remain constant

4.No regular trend


Question:
Metallic characters of alkali metals

1.Increase down the group

2.Decrease down the group

3.No regular trend


Question:
Modern periodic table has been divided in _______ blocks

1.2

2.4

3.7

4.8


Question:
Non-metals usually form ______________ oxides

1.Acidic

2.Amphoteric

3.Neutral

4.Neutral


Question:
Oxidation state of an atom represents

1.Number of electrons gained

2.Number of electrons lost

3.Apparent charge in compound

4.Its vacancies


Question:
Phosphene gas will be produced if phosphorous acid is subjected to

1.Oxidation

2.Reduction

3.Decomposition

4.Both b & c


Question:
Phosphorous acid upon thermal decomposition yields phosphoric acid and

1.Phosphine

2.Phosphorus

3.Water

4.Phosphorus pentoxide


Question:
Phosphorus is a Greek word and it means

1.Light bearing

2.Fire

3.Impure

4.Tetrahedral


Question:
Seventh period contains ______________ normal elements

1.2

2.4

3.6

4.8


Question:
Shielding effect across the period

1.Increases

2.Decreases

3.Can not be predicted

4.Remains constant


Question:
SO3 is not absorbed in water directly because

1.Reaction is exothermic

2.It is insoluble in water

3.Dilute acid is produced

4.All of above


Question:
The atomic radii decreases by increasing atomic number in

1.Alkali metal

2.Alkaline earth metal

3.Elements from Li to Ne

4.Halogens


Question:
The atoms of same element having same atomic number but different mass number are called

1.Isobars

2.Isomers

3.Isotopes

4.Isotropes


Question:
The composition of brown ring in nitrate test is

1.FeSO4.No

2.FeSO4.No2

3.FeSO4.No3

4.FeSO4.N2o


Question:
The most electronegative element among the following is

1.Sb

2.N

3.As

4.P


Question:
The property which increases upto group IV-A then decreases onwards

1.Ionization energy

2.Atomic radii

3.Melting & boiling points

4.Atomic volume


Question:
True increasing order of acidity of the oxides of Mn is

1.MnO < MnO2 < Mn2O7

2.Mn2O7 > MnO2 > MnO

3.MnO2 > MnO > Mn2O7

4.MnO2 > Mn2O7 > MnO


Question:
Which discovery caused a revision in the periodic law as stated by Mendeleev?

1.Location of nucleus by Rutherford

2.Atomic number by Moseley

3.X-rays by Roentgen

4.Natural radioactivity by Henry Bacquerel.


Question:
Which of the following cannot exist in solution

1.O-2

2.H+

3.Cl-

4.Na+


Question:
Which of the following does not contain phosphorus?

1.Yolk of egg

2.Bone

3.Nerves

4.Steel


Question:
Which of the following ion is stable in aqueous solution?

1.H+

2.H-

3.Cl-

4.All are stable


Question:
Which of the following is different with respect to physical appearance?

1.Arsenic

2.Phosphorus

3.Antimony

4.Bismuth


Question:
Which of the following possesses maximum hydration energy?

1.Na+

2.K+

3.Mg+2

4.Ca+2


Question:
Which of the following will give phosphoric acid one reaction with water

1.PCI5

2.P2O3

3.P2O5

4.All of the above


Question:
Which one of following is not a property of pure quartz?

1.Coloured solid

2.Brittle

3.Hard

4.All of above


Question:
Which one of the following compounds usually smells like garlic?

1.

2.P2O5

3.H3PO3

4.All have same smell


Question:
Which one of the following element has highest exidation state in its compounds?

1.Cr

2.Mn

3.Sn

4.O


Question:
Which one of the following is not a periodic property?

1.Melting point of elements

2.Boiling point of elements

3.Ionization energy of elements

4.Coordination number of ions


Question:
Which one of the following is not the use of graphite?

1.Lead pencils

2.Abrasive

3.Lubricant

4.Electrode of electrolytic cell


Question:
Which one of the following sets consists of all coinage metals?

1.Cu Hg Au

2.Cu Ag Au

3.Ag Au Hg

4.Cu Fe Au


Question:
Which one of the followings possesses melting point below 0?C?

1.Nitrogen

2.Phosphorus

3.Carbon

4.Bismuth


Question:
Which order of ionization energy is correct

1.Mg < A1

2.Si > P

3.Mg > A1

4.both b & c


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