General Knowledge » Science and Scientific Research
Which of the following is an organic compound with the formula CH3OC6H5 used as a perfume, fragrance and solvent?
Acetophenone
Anisole
Aniline
Toluene
General Knowledge » Science and Scientific Research
Identify an example of decomposers that are found in the bottom of a pond.
Flagellates
Phytoplankton
Zooplankton
Jellyfishes
General Knowledge » Science and Scientific Research
Chemical formula of magnesium oxide is ______.
MgO
MgO2
Mg(OH)2
MgCO3
General Knowledge » Science and Scientific Research
There are ______ main types of cell division.
5
3
2
4
General Knowledge » Science and Scientific Research
An electric current is expressed by a unit called _________.
joule
meter
ampere
watt
General Knowledge » Science and Scientific Research
The chemical formula of borax is _________.
Na2B4O7.10H2O
Na2B4O7.12H2O
Na2B5O7.10H2O
Na2B4O7.5H2O
General Knowledge » Science and Scientific Research
______ is found in association with rocks composed of calcium carbonates?
Gold
Iron
Limestone
Diamond
General Knowledge » Science and Scientific Research
Husk of a coconut is made of ______ tissue.
Xylem
Parenchyma
Scherenchyma
Collenchyma
General Knowledge » Science and Scientific Research
Identify the correct statement with respect to unsaturated hydrocarbons.
Compounds of carbon having double bonds or triple bonds between their carbon atoms are called unsaturated compounds.
Compounds of carbon having single bonds between their oxygen atoms are called unsaturated compounds.
Compounds of carbon having a single bond between their carbon atoms are called unsaturated compounds.
Compounds of carbon having double or triple bonds between their hydrogen atoms are called unsaturated compounds.
General Knowledge » Science and Scientific Research
Which of the following options is NOT correct about plant cells?
Generally, all plant cells contain chloroplast.
Cell wall of a plant cell is made up of cellulose.
A plant cell usually contains a large vacuole.
The plant cells cannot divide by mitosis.
General Knowledge » Science and Scientific Research
Who conducted X-ray spectroscopic study of a large number of elements and showed that the frequency of X-rays emitted by an element is related to the atomic number, Z, rather than the atomic mass?
Dmitri Mendeleev
Henry Moseley
Lothar Meyer
Johann Dobereiner
General Knowledge » Science and Scientific Research
Identify an option that does NOT represent prokaryotic cells.
Sperm
Mycoplasma
Pleuropneumonia-like organism
Blue-green alga
General Knowledge » Science and Scientific Research
Evangelista Torricelli was well known for which discovery?
Invention of spring balance
Invention of vacuum gauge
Invention of mercury barometer
Invention of piezometer
General Knowledge » Science and Scientific Research
Chemical formula of gypsum is ______.
CaSO4.2H2O
CaSO4.H2O
CaSO4
CaSO4.(1/2)H2O
General Knowledge » Science and Scientific Research
Which of the following are members of 15 naturally occurring metallic chemical elements whose atomic numbers are between 57 and 71?
Alkali Metals
Halogens
Actinides
Lanthanides
General Knowledge » Science and Scientific Research
Identify the animal that is NOT a non-chordate.
Porifera
Arthropods
Arachnids
Repltiles
General Knowledge » Science and Scientific Research
The body of the ______ is circular in cross-section, hence, the name roundworms. They may be free living, aquatic and terrestrial or parasitic in plants and animals.
Mollusca
Platyhelminthes
Ctenophores
Aschelminthes
General Knowledge » Science and Scientific Research
Which French chemist was one of the first scientists to synthesise organic compounds such as formic acid, methane and acetylene from their elements?
Auguste Laurent
Jacob Berzelius
Marcellin Berthelot
Antoine Lavoisier
General Knowledge » Science and Scientific Research
Roquefortine C is found in:
chicken
Egg
cheese
Meat
General Knowledge » Science and Scientific Research
Which force is responsible for the motion of the moon around earth?
Frictional
Centrifugal
Centripetal
Van der Waals