Striga spp. is a parasitic weed of
Cotton
Orange
Groundnut
Sorghum
Correct answer is D
No explanation has been provided for this answer.
Which of the following insect-pests possesses biting and chewing mouthparts?
Grasshopper
Weevil
Aphid
Cotton stainer
Correct answer is A
No explanation has been provided for this answer.
I and II only
I and III only
I, II and III only
I, II and IV only
Correct answer is D
No explanation has been provided for this answer.
contains more ions
is neutral to litmus
has a lower molar mass
has a higher pH
Correct answer is A
0.10 mol \(dm^{-3}\) NaCI conducts electricity better than 0.10 mol \(dm^{-3}\) \(CH_3COOH\) because the solution of NaCI contains more ions. When an ionic compound like NaCI dissolves in water, it dissociates into its component ions, \(Na^+\) and \(Cl^{-}\)
Fe 2+ (aq) + Cu(s) → Fe 3+ + Cu 2+ (aq)
Fe 2+ (aq) + Cu(s) → Fe(s) + Cu2+ (aq)
Fe (s) + Cu2+ (aq) → Fe2+(aq) + Cu2+ (aq)
Fe(s) + Cu2+ → Fe2+(aq) + Cu(s)
Correct answer is D
No explanation has been provided for this answer.