List of top Science Questions

Which one of the following is a metalloid?
The ozone layer protects the Earth from which harmful radiation?
Propane, with the molecular formula \( C_3H_8 \), has:
The expulsion of water through stomata in the form of vapor from the aerial part of the plant is known as:
Peristalsis movement is found in:
Open circulatory system is found in:
The carrier of oxygen in blood is:
The place of origin of humans is:
The number of pairs of autosomes in humans is:
The tiger is a consumer of:
What is glycolysis?
Define nutrition.
What is hormone?
DNA is the basis of heredity. How?
What is the role of petals in flowers?
Write about five important sexually transmitted diseases, their causal pathogens, and symptoms.
Define pollination. Write the effect of rainfall on pollination.
What is environment?
What is sinoauricular node?
What is an ore?
What is corrosion? Explain with example.
Write the steps involved in the extraction of metals from ores.
Why does the aqueous solution of an acid conduct electricity?
What is ozone? Explain its importance.
Briefly describe the benefits of rainwater harvesting.