atomic structure molecules and nuclear chemistry - Category wise Question and Answer Practice Test with Solutions
Question : 1 [BPSC (Pre) 2002]
Which of the following carries a negative charge?
a) Alpha particles
b) Beta particles
c) X-rays
d) Gamma rays
Answer »Answer: (b)
Question : 2 [NDA]
How many moles of hydrogen atom are present in one mole of Aluminium hydroxide ?
a) Three moles
b) Two moles
c) one mole
d) Four moles
Answer »Answer: (a)
Question : 3
What is the mass (in grams) of 3 moles of N?
a) 42
b) 28
c) 14
d) 56
Answer »Answer: (a)
Question : 4
A group of atoms chemically bonded together is a (an)
a) ion
b) salt
c) molecule
d) element
Answer »Answer: (c)
In a molecule two or more than two atoms are convalently bonded with each other.
Question : 5
The percentage of copper and oxygen in samples of CuO obtained by different methods were found to be the same. The illustrate the law of
a) conservation of mass
b) multiple proportions
c) constant proportions
d) reciprocal proportions
Answer »Answer: (c)
Constant proportions according to which “a pure chemical compound always contains same elements combined together in the same definite proportion of weight.”
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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