classification of elements, chemical bonding, periodicity in properties & physical transformation - Category wise Question and Answer Practice Test with Solutions
classification of elements, chemical bonding, periodicity in properties & physical transformation PRACTICE TEST [4 - EXERCISES]
set 1
set 2
set 3
set 4
Question : 1
The elements with atomic numbers 2, 10, 18, 36, 54 and 86 are all
a) noble gases
b) noble metals
c) halogen
d) light metals
Answer »Answer: (a)
All these are noble gases with completely filled outermost shell.
Question : 2 [UPPCS (Pre) 1992]
Change of water into the vapour is called
a) Physical
b) Chemical
c) Natural
d) Biological
Answer »Answer: (a)
Question : 3
Which of the following statements is incorrect from the point of view of modern periodic table ?
a) There are eighteen vertical columns called groups
b) Transition elements fit in the middle of long periods
c) Elements are arranged in the order of increasing atomic number
d) Noble gases are arbitrarily placed in eighteenth group
Answer »Answer: (d)
Question : 4
Which fact is not valid for Dobereiner's triads?
a) The properties of middle element is roughly average of the other two elements
b) The elements of triads belong to the same group of modern periodic table
c) The atomic weight of middle element is roughly average of the other two elements
d) The elements of triads have same valency electrons.
Answer »Answer: (a)
Question : 5 [IAS (Pre) 2001]
Assertion (A):
A chemical reaction becomes faster at a higher temperature.
Reason (R):
At higher temperature, molecular motion becomes more rapid.
a) Both (A) and (R) are true, but (R) is not the correct explanation of (A)
b) (A) is true, but (R) is false
c) Both (A) and (R) are true and (R) is the correct explanation of (A)
d) (A) is false, but (R) is true
Answer »Answer: (c)
IMPORTANT general science mcq EXERCISES
general science mcq CATEGORIES
-
» Measurement And SI Units
-
» Measuring Devices And Scales
-
» Mechanics (Mass, Force, Acceleration, Work, Energy, Momentum, Velocity)
-
» Force Of Gravity, Solids And Fluids
-
» Motion Under Gravity
-
» Physical Properties Of Materials
-
» Light, Heat, Thermodynamics, Wave Motion, Sound, Optics & Oscillations
-
» Electric Current And Magnetism
-
» Nuclear Physics And Conductivity
-
» Modern And Space Physics, Sources Of Energy
-
» General Concepts Of Chemistry
-
» Nature Of Matter And Composition
-
» Atomic Structure Molecules And Nuclear Chemistry
-
» Classification Of Elements, Chemical Bonding, Periodicity In Properties & Physical Transformation
-
» Metals, Non Metals, Minerals, Ores, Properties, Uses
-
» Alloys, Carbon & Its Various Forms, Hydrogen & Compounds, Sulphur, Nitrogen, Halogen & Inert Gases
-
» Acids, Bases, Salts And Metals
-
» Hydrocarbon, Alcohol, Polymer, Organic Acid And Explosive Substance
-
» Fuel, Food Preservation, Nutrition, Medicine, Detergents And Fertilizers
-
» Inorganic Chemistry
-
» Organic Chemistry
-
» Environmental Chemistry
-
» Some Important Man Made Materials
-
» Sub Divisions Of Biology
-
» Genetics, Evolution Of Life & Ecological Biodiversity
-
» Taxonomy
-
» Heredity
-
» Biofertilizer
-
» Biological Classification Cell Tissues And Division
-
» Human Anatomy
-
» Blood Transport System
-
» Digestion And Excretion
-
» Photosynthesis
-
» Vitamins, Nutrition, Health, Disease And Treatment
-
» Endocrine Glands, Hormones
-
» Physiology Of Plants, Humans And Animals
-
» Reproduction
-
» Genetic Engineering And Bio Technology
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