Aluminium sulphate is an ionic compound formed by the combination of aluminium ions (Al³⁺) and sulphate ions (SO₄²⁻). To balance the charges:
· Aluminium ion (Al³⁺) → Has a charge of +3.
· Sulphate ion (SO₄²⁻) → Has a charge of -2.
To achieve charge neutrality, the lowest common multiple of 3 and 2 is 6, so:
· 2 Aluminium ions (2 × +3 = +6)
· 3 Sulphate ions (3 × -2 = -6)
Which of the following vices consists of a handle and a small collet chuck at one end?
According to BIS SP 46-2003, which of the following applications is correctly represented by a chain-thin line in engineering drawings?
What is the unit of specifying slip gauges?
___________ microstructure is typically obtained after normalising low-carbon steel.
Which of the following is a key characteristic of a low-pressure blowpipe/torch in welding?
Which of the following is NOT required for estimating materials in preventive maintenance?
Which of the following parts of a file is the part fitted to the tang for holding the file?
Which hardness test uses a diamond pyramid-shaped indenter?
The unit for specific gravity is _____.
When selecting a sheet size for an original drawing, what should be the primary consideration?
Which of the following vices consists of a handle and a small collet chuck at one end?
According to BIS SP 46-2003, which of the following applications is correctly represented by a chain-thin line in engineering drawings?
What is the unit of specifying slip gauges?
___________ microstructure is typically obtained after normalising low-carbon steel.
Which of the following is a key characteristic of a low-pressure blowpipe/torch in welding?
Which of the following is NOT required for estimating materials in preventive maintenance?
Which of the following parts of a file is the part fitted to the tang for holding the file?
Which hardness test uses a diamond pyramid-shaped indenter?
The unit for specific gravity is _____.
When selecting a sheet size for an original drawing, what should be the primary consideration?
