P-1 Periodic Classification of Element — Science STD 10 — Question

1 calorie = ______________ joule.

A _________is formed in the process of fertilization by union of hyploid male and female gametes.

The melting point of ice is ______________ °C.

Fill in the following blanks with suitable words:
Rose plants and sugar cane crop are usually grown by the _________ method.

Fill in the following blanks with suitable words:
The addition of hydrogen to a substance is called __________ whereas removal of hydrogen is called __________.

Ethanol gets oxidized by alkaline Potassium permanganate to form ______________ .

As per clause ………… use of articles prepared from skin or organs of wild animals has been banned

The science that deals with the study of interactions between biotic and abiotic factors of the environment is called ………… .

Fill in the following blanks with suitable words:
Bronze is an alloy of copper and _______.

The scientist __________ used the glass prism for obtaining spectrum from the sunlight.