Worksheetsscience day quiz
Total questions: 20
Worksheet time: 10mins
1.The filling of molecular orbital takes place according to
The Aufbau Principle
Pauli Exclusion Principle
Hund’s rule of maximum multiplicity
All of the mentioned
Which of the following molecule does not exist due to its zero bond order?
H2+
He2+
He2
H2–
A polymer is any substance made up of many repeating units called
Resins
Plastic
Mers
Blocks
Which one of the following is not an example of thermoplastic?
Polyvinyl chloride
Nylon
Polyesters
Epoxy
According to Molecular Orbital Theory, the shape and size of a molecular orbital depends upon
Shape and size of the combining atomic orbitals
Numbers of the combining atomic orbitals
Orientation of the combining atomic orbitals
All of the mentioned
amylase is an endo enzyme which requires
Ca
Cu
Mn
None of these
Secondary treatment uses ____ to consume wastes.
micro-organisms
chemicals
filtration
none of these
BOD stands for
biochemical oxygen demand
british oxygen demand
british oxygen depletion
biological oxygen depletion
Which of the following substances are commonly used in a filter?
Options
Charcoal
Sand
Both (a) and (b)
Aluminum chloride
The moist heat is more effective than the dry heat because the intrinsic heat resistance of vegetative cells is greatly
increased in a dry state
decreased in a dry state
increased in a wet state
decreased in a wet state
The theory of relativity was presented by which scientist
Albert Einstein
Marie Curie
Stephen Hawking
Isaac Newton
The different colours of different stars is due to the variation of
Pressure
Temperature
Density
Radiations from them
In the atmosphere UV rays are absorbed by
Oxygen
Helium
Nitrogen
Ozone
Convex lenses are used for the correction of
Long-Sightedness
Short- Sightedness
Cataract
None of these
Light year is a unit of
time
distance
light
intensity of light
Out of the following, which is not emitted by radioactive substance?
Electrons
Electromagnetic radiations
Alpha particles
Neutrons
Metals are good conductors of electricity because
they contain free electrons
the atoms are lightly packed
they have high melting point
All of the above
Swimming is an example of which of the following?
Newton’s first law of motion
Newton’s second law of motion
Newton’s third law of motion
Law of inertia
When a moving bus suddenly stops, a person sitting
Stands up
Falls forward
Falls backward
Is unaffected
When a spring is compressed or stretched, the potential energy of the spring
Decreases
Stays constant
Increases
Becomes zero
