A mixture of blue and red pigment when illuminated by white light will appear
green
orange
yellow
magenta
Correct answer is D
Mixing blue and red pigments in equal amount gives magenta when illuminated by white light
gets hotter
increase is mass
decreases in mass
changes to steam
Correct answer is D
Boiling indicates changes from Liquid to gas.
The lead-acid accumulator consists of
lead as the positive electrode
lead acid as the negative electrode
hydrochloric acid as the electrolyte
tetraoxosulphate (vi) acid as the electrolyte
Correct answer is D
- the positive pole is lead peroxide (PbO\(_2\))
- the negative pole is head
- the electrolyte is H\(_2\)SO\(_4\)
\(300^0C\)
\(200^0C\)
\(100^0C\)
\(-100^0C\)
Correct answer is D
L\(_1\) = 100cm, T\(_1\) = 200°C
L\(_2\) = 99.4cm, T\(_2\) = ?
α 2 × 10\(^{-5}\) C\(^{-1}\)