Home > General Knowledge Questions Answers > Physics Questions Answers
Physics Questions Answers
Diamond used in jewellery is —
a compound
a metal
a mixture of compounds
an element
an element
Which one of the following statements regarding Aluminium is not correct?
Aluminium hydroxide is amphoteric in nature
Aluminium occurs in free state in nature
Nitiric acid hardly affects aluminium at all
Hot concentrated sulphuric acid gives sulphur dioxide with aluminium
Hot concentrated sulphuric acid gives sulphur dioxide with aluminium
A DC voltmeter is capable of measuring a maximum of 300 volts. If it is used to measure the voltage across a device operating at 220-volt AC supply, the reading of the voltmeter will be
300 volts
220 volts
110 volts
0 volt
0 volt
DC measuring instruments cannot be used to measure AC voltage or current as DC measuring instruments gives zero reading while measuring AC supply.
When two ice cubes are pressed together, they join to form one cube. Which one of the following helps to hold them together?
Hydrogen bond formation
Van der Waals forces
Covalent attraction
Dipole interaction
Hydrogen bond formation
Which one of the following is a motile unicellular organism with a single cilium and can exist as an autotroph as well as a saprotroph?
Chalmydomonas
Euglena
Nostoc
Osciliatoria
Euglena
Which one of the following is true for the flow of water from high level to low level (at constant temperature and pressure)?
△ = 0
△G = 1
△G < 0
△G < ∞
△G < 0
Oxygen and ozone are —
allotropes
isotopes
isomers
isobars
allotropes
Which one of the following varieties of coal has the highest amount of carbon in it?
Anthracite
Bituminous
Lignite
Peat
Anthracite
Which one of the following phenomena cannot be attributed to the refraction of light?
Twinkling of stars
Mirage
Rainbow
Red Shift
Red Shift
The milk looks white because it —
Absorbs light
Contains proteins
Contains sugars
Reflects the incident light
Reflects the incident light