Useful and Harmful Microbes — Science STD 9 — Question

Fill in the following blanks with suitable words:
The slope of a speed-time graph of a moving body gives its ________.

Melting point of Teflon is________

Fill in the following blanks with suitable words:
Brine is a ___________ whereas alcohol is a ___________.

Fill in the blanks in the following statements:
The subatomic particle not present in a hydrogen atom is _________.

Fill in the following blanks with suitable words:
In water, the proportion of oxygen and hydrogen is _________ by mass.

Fill in the blanks in the following statements:
The anode rays obtained form hydrogen gas consist of particles called __________.

Fill in the following blanks with suitable word:
In collisions and explosions, the total _______ remains constant, provided that no external _______.

Fill in the following blanks with suitable words:
If a mixture contains iron filings as one of the constituents, if can be separated by using a ___________.

Fill in the blanks in the following statements:
The electron has ________ charge, the proton has _________ charge, and the neutron has _________ charge.

Fill in the blanks in the following statements:
The maximum number of electrons that can go into the M shell is __________.