Chemistry

An unsaturated solution differs from a saturated solution at a given temperature because it?

A. Cannot dissolve more solute B. Can hold more solute than it can actually dissolve C. Can still dissolve more…

6 years ago

Aluminium is used in the manufacture or aircraft because it?

A. Is hard and brittle B. Is light and resists corrosion C. Has high density and conducts electricity D. Is…

6 years ago

Metals can be stretched into wires because they are?

A. Ductile B. Good conductors C. Lustrous D. Malleable Correct Answer: Option A A. Ductile

6 years ago

Chemicals that are produced in small quantities and with very degree of purity are?

A. Bulk chemicals B. Fine chemicals C. Heavy chemicals D. Light chemicals Correct Answer: Option B B. Fine chemicals

6 years ago

The boiling points of HF, H2O and NH3 increase in the order of?

A. NH3 B. H2O < HF C. HF < NH3 < H2O D. NH3 < HF < H2O Correct Answer:…

6 years ago

When element 20Y combines with element 8Z?

A. A covalent compound, YZ is formed B. A covalent compound, ZY is formed C. An ionic compound, YZ is…

6 years ago

How many electrons are present in 9//4Be2+?

A. 2 B. 4 C. 5 D. 6 Correct Answer: Option A A. 2

6 years ago

Petroleum is a non-renewable source of energy because it?

A. is formed naturally B. is cheap C. can be recycled after use D. cannot be regenerated once used up…

6 years ago

The real harmful effect of the release of chlorofluorocarbons into the atmosphere is that it eventually causes?

A. excessive ultraviolet light from the sun to reach the earth surface B. excessive release of infrared light from the…

6 years ago