List of top Science Questions

Which of the following metals can be easily cut with a knife ?
Which acid is found in ant sting?
The basic source of oxygen in photosynthesis is
Xylem in plant is responsible for
An aqueous solution of an acid conducts electricity because acid in water
The transfer of \(O_2\) from outside environment to cells and removal of \(CO_2\) is referred to as
Which of the following is known as the 'energy currency' of the cell?
Apart from plasma, which of the following is found in blood ?
The posterior part of the oral cavity is
When electric current flows through a conducting wire, what type of magnetic field is generated above and below the wire ?
In Fleming's left-hand rule, the index finger of the left hand indicates
Bile juice is secreted by
Which gas is responsible for global warming?
What is the function of the villi located in small intestine ?
What type of energy source is hydroelectric energy ?
Faraday made many revolutionary discoveries, including
If a compass is placed near a wire carrying electric current, the compass needle
A horizontal magnet hanging freely in air always comes to rest in
An electric motor converts
In which of the following reactions is a combination reaction taking place?
I. CuO + H$_2$ $\xrightarrow{\Delta}$ Cu + H$_2$O
II. ZnO + C → Zn + CO
III. 4Na + O$_2$ → 2Na$_2$O
IV. CH$_4$ + 2O$_2$ → CO$_2$ + 2H$_2$O
Write short notes on: (i) Reflex action
(ii) Lymph
Differentiate between Autotrophic Nutrition and Heterotrophic Nutrition with examples.
(ii) Explain the cleansing action of soap.
Describe the transport in plants and write its importance.
Describe the structure and working method of excretory system of human.