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Worksheets8T1 SCI REV
Total questions: 30
Worksheet time: 19mins
Electric current is a ______quantity
a. base
b. supplementary
c. derived
d. professional
SI unit of temperature is ______
a. celsius
b. fahrenheit
c. kelvin
d. ampere
The coldness or hotness of a substance is expressed by -------. (a)
Amount of substance gives the number of particles present in a substance.
The value of the atmospheric pressure at sea level is
a. 76 cm of mercury column
b. 760 cm of mercury column
c. 176 cm of mercury column
d. 7.6 cm of mercury column
Hydraulic lift works under the principle of ----------. (a)
A moving body comes to rest due to friction alone.
If the focal length of a spherical mirror is 10 cm, what is the value of its radius of curvature?
a) 10 cm
b) 5 cm
c) 20 cm
d) 15 cm
Geometric centre of the spherical mirror is --------. (a)
The distance from the pole to the focus is called
a) pole length
b) focal length
c) principal axis
d) None of the above
Burning of paper is a __________ change.
a) physical
b) chemical
c) physical and chemical
d) neutral
Photosynthesis is a chemical reaction that takes place in the presence of ---------. (a)
Formation of slaked lime from quicklime is an endothermic reaction.
The liquid metal used in thermometers is
a) copper
b) mercury
c) silver
d) gold
The symbol of tungsten is --------. (a)
Tungsten
a. Making the filament of a bulb
b. Sewing needle
c. For making wires
d. As a fuel for ignition in rocket
Pencil lead contains
a) graphite
b) diamond
c) aluminium
d) sulphur
Solvay process is a method to manufacture
a) lime water
b) aerated water
c) distilled water
d) sodium carbonate
Dry ice is used as a ----------. (a)
Carbon‘dioxide
a. Fire extinguisher
b. Fertilizer
c. Respiration in living animals
d. Refrigerator
Microorganisms are measured in _______.
a) cm
b) mm
c) micron
d) meter.
Female anopheles mosquito is a carrier of dengue virus.
Citrus canker is transmitted by insects.
The well-developed sporophytic plant body is seen in
a) bryophytes
b) pteridophytes
c) gymnosperms
d) angiosperms
Binominal Nomenclature was first introduced in the year
a) 1970
b) 1975
c) 1978
d) 1623
Monocotyledon seed bears only ------- cotyledon. (a)
______________ cells are specialised cells that can be transformed into any kind of cells.
a) Nerve
b) Stem
c) Heart
d) Bone
Carbohydrates
a. glucose
b. amino acid
c. CO2, water and heat
d. Amino acids
The process of air passing in and out the lungs is called ______________.
a) inhalation
b) exhalation
c) breathing
d) None of these
Maintenance of constant internal environment of the body is known as
a) homeostasis
b) homeophytes
c) homeokinesis
d) homeophilics
