Matter in Our Surroundings — Science STD 9 — Question

__________ crops are grown during the rainy season, in the months of June to October. (Rabi, Kharif, Zaid)

_______ are both conducting tissues. (Xylem, Collenchyma, Epidermis)

Brass is an alloy which is considered a _________.

A potassium ion has positive change because it contains less _________ than __________.

The electron has Negative charge, the proton has Positive, charge, and the neutron has _________ charge. (Negative, Positive, No charge)

The subatomic particle not present in a hydrogen atom is _________.

Naphthalene undergoes the process of ________. (Condensation, Sublimation, Evaporation)

If the nucleus of an atom has atomic number 17, mass number 37 abd there are 17 electrons outside the nucleus, the number of neutrons in it is ____________.