List of top Science Questions

The electronic configuration of an element is 2, 8, 7. What is the atomic number of the element?
Duralumin is an alloy of which metal?
The valency of all elements in a group of the periodic table is:
What is the number of elements in the third group of the periodic table?
Which is used in a solar cell?
Hydrilla is found:
Systolic blood pressure of a healthy person is:
In fish, respiration takes place through:
Vegetative propagation in potato takes place by:
In which of the following organisms does asexual reproduction occur through budding?
An example of plant hormone is:
An example of a bisexual organism is:
Which of the following is a salt?
Depletion of the ozone layer is due to:
The maximum number of electrons in a shell is:
Which of the following metals has the lowest melting point?
Which is the conventional source of energy?
The atomic number of gold is:
Which hydrocarbon is the simplest compound?
How many bonds are there between two atoms in a molecule of nitrogen?
The general formula of alkyne is:
How many crystalline allotropes of carbon are there?
The hardest natural substance is:
The amount of light entering the human eye is controlled by:
Zinc blende is an ore of which metal?