Identify the pigment that gives blood its

Which of the following methods is suitable for preventing an iron frying pan from rusting?

A concave lens always forms an image which is –

Which part of cinnamon tree is used in condiments and medicines ?

The red colour of onion is caused by the presence of which pigment?

Which of the following compounds form nitrites with nitrous acid?

Study the given information.

Consider the force on a current carrying straight conductor in a magnetic field.

The device used for locating submerged objects under sea is –

The vector of malaria is :

Which of the following is a primary pollutant?

The membrane surrounding the cell is called