Which of the following characters is not shown by hydrogen
It burns in air to form water
It supports combustion
It readily combines with fluorine and chlorine
It combines with almost all metals forming hydrides
Correct Answer :
B. It supports combustion
Related Questions
In a certain electronic circuit the output is positive if input 1 is positive and input 2 is zero. If both inputs are positive the output is zero. This is
an AND circuit
an OR circuit
a high-pass filter
a NOR circuit
Nitrification means
Conversion of nitrogen to nitric acid.
Production of nitrogen from air
Convert the atmospheric nitrogen to effective nitrogen compound.
Liquifaction of nitrogen
According to Daltons atomic theory the smallest particle which can exist independently is
An atom
A cation
A molecule
An anion
Cell membrane is
permeable
semipermeable
selectively permeable
impermeable
Permanent hardness of water can be removed by adding
Potassium Permanganate
Bleaching Powder
Chlorine
Washing Soda
Quartz crystals normally used in quartz clocks etc. is chemically
A mixture of B and C
Silicon dioxide
Germenium dioxide
Sodium Silicate
When a gas is turned into a liquid, the process is called
evaporation
condensation
sublimation
deposition
Rust is
A mixture of FeO and Fe(OH)2
A mixture of Fe2O3 and Fe(OH)2
A mixture of Fe2O3, 3H2O and FeO
FeO only
The formula of Plaster of Paris is
2CaSO4, H2O
CaSO4
CaSO4, 2H2O
2CaSO4, 4H2O
The hardest substance available on earth is
Platinum
Quartz
gold
Diamond
Epoxy resins is used as
Adhesives
Detergents
Insecticides
Moth repellants
The metallic constituents of hard water are
Calcium, magnesium and iron
Magnesium, Calcium and tin
Magnesium, tin and iron
Iron, tin and calcium
Water has maximum density at
0°C
-4°C
100°C
4°C
The oxide of Nitrogen used in medicine as anaesthetic is
Nitric oxide
Nitrogen dioxide
Nitrogen pentoxide
Nitrous oxide
Which of the following parts of the sun is easily visible only during a total solar eclipse?
core
photosphere
sunspots
corona
The solar eclipse occurs when
the sun comes in between the moon and the earth
the moon comes in between the sun and the earth
the earth comes in the between the sun and the moon
None of the above
Glass is made from the mixture of
Quartz and mica
Sand and salt
Sand and silicates
None of these
The marine animal called dugong which is vulnerable to extinction is a/an
Amphibian
Shark
Bony fish
Mammal
Which of the following is commonly called a polyamide ?
Orion
Terylene
Rayon
Nylon
Earth's seasons are caused by which of the following?
The varying amount of sunspot activity
The tilt of the earth's rotation relative to the ecliptic as earth revolves around the sun
The earth's orbit around the sun as an exlipse rather than a circle
The rotation of during a 24-hour day
What is the unit for measuring the pitch or frequency of sound ?
Coulomb
Hum
Cycles
Decible
Apparatus invented by Archimedes is :
Pulley
Microscope
Thermemoter
Barometer
Polythene is industrially prepared by the polymerisation of
styrene
methane
ethylene
acetylene
The intencity of Earthquakes is measured on
Beaufort scale
Secant scale
Mercalli scale
Richter scale
Pollination by birds is called
autogamy
entomophily
anemophily
ornithophily
Which of the following elements is obtained from sea weeds ?
Argon
Vanadium
Iodine
Sulphur
Lightening cause rainfall because
It activate H2O molecule
Photo-electricity reaction starts
Some of the gas molecules become bigger
It cause combination of oxygen and nitrogen
The removal of top soil by water or wind is called
Soil erosion
Soil wash
Silting of soil
Soil creep
The most important ore of Aluminium is
Calamine
Calcite
Galena
Bauxite
The location and energy of an electron in an atom can be specified by
Atomic number
Atomic mass
Quantum numbers
None of these