Boyle’s law
Collision theory
Laws of chemical combination
Molecular motion in liquids and gases
Vibrational motion in liquids.
Correct answer is D
No explanation has been provided for this answer.
A chemical system is at equilibrium when
δ G is positive
δ G is zero
δ S is negative
δ S is positive
δ S is zero.
Correct answer is B
No explanation has been provided for this answer.
sodium hydroxide is a strong alkali
sodium is more reactive than zinc
zinc is more reactive than sodium
zinc hydroxide is amphoteric
zinc hydroxide is unstable
Correct answer is D
No explanation has been provided for this answer.
The gas in air used by plants for photosynthesis is
Argon
Carbon (IV) oxide
Nitrogen
Oxygen
Water vapour.
Correct answer is B
No explanation has been provided for this answer.
Which of these arrangement of elements is in order of increasing ionization energy?
Boron, Carbon, Flourine, Nitrogen
Boron, Carbon, Nitrogen, Flourine
Carbon, Boron, Nitrogen, Flourine
Flourine, Nitro9en, Carbon, Boron
Nitrogen, Flourine, Carbon, Boron
Correct answer is B
No explanation has been provided for this answer.