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Worksheets9th science quiz
Total questions: 20
Worksheet time: 10mins
The longest day of the year is ____
June 21
August 21
July 21
December 21
When an atom gains an electron, it becomes _____
Cation
Anion
Neutron
None
The chemical name of hypo- a solution used in photography is
Sodium thiosulfate
Sodium phosphate
Potassium thiosulfate
None
Primary component of natural gas is
Butane
Methane
Chlorine
Hydrogen
What is the number of chromosomes in humans?
23 pairs
20 pairs
18 pairs
10 pairs
What is the PH of the human blood?
4.5
7.4
5.7
3.4
What is the scientific name of man ?
Alliumcepa
Homosapiens
Pisumsativum
Lilliaceae
At what temperature Celsius and farenheit temperature are equal?
- 40 degrees
80 degrees
+40 degrees
+ 80 degrees
Chlorophyll is a naturally occurring molecule in which the central metal is
Fe
Mg
Cu
An
Washing soda is the common name for
Sodium chloride
Sodium bicarbonate
Sodium carbonate
Sodium hydroxide
The hardest substance available on earth is a. b. c. d.
Gold
Diamond
Iron
Copper
Galvanized iron sheets have a coating of
Sodium
Zinc
Iron
None
Which is the hardest bone in the human body?
Thigh bone
Jaw bone
Knee bone
Joint
Nucleus + cytoplasm =
Nucleoplasm
Protoplasm
Both
None
The plant which kills inserts___
Nepenthes
Cucumber
Apple
Guava
. As we go from equator to the poles the value of g
Remains the same
Increases
Decreases
No change
When was ISRO formed ?
15th August 1947
15th August 1952
15th August 1969
26th January 1950
. Supersonic plane fly with the speed ( )
Less than the speed of sound
Of sound
Greater than the speed of sound
None
One nanometer is equal to
10-6 m
10-8 m c.
10-9 m
10-5m
One astronomical unit is the average distance between
Earth and sun
Jupiter and sun
Earth and moon
Jupiter and moon
