In the case of alkali metals, the covalent character decreases in the order
In the case of alkali metals, the covalent character decreases in the order
Options
(a) MF > MCl > MBr > MI (b) MF > MCl > MI > MBr (c) MI > […]
Chemistry
A solid compound X on heating gives CO₂ and a residue .
A solid compound X on heating gives CO₂ and a residue . The residue mixed with water forms Y. On passing an excess of CO₂ through Y in water, a clear solution Z is obtained […]
Identify the correct statement:
Identify the correct statement:
Options
(a) Plaster of paris can be obtained by hydration of gypsum (b) Plaster of paris is obtained by partical oxidation of gypsum (c) Gypsum contains a lower percentage […]
The formula for calcium chlorite is
The formula for calcium chlorite is
Options
(a) CaClO₂ (b) Ca(ClO₂)₂ (c) Ca(ClO₄)₂ (d) Ca(ClO₃)₂
Correct Answer:
Ca(ClO2)₂
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
Which of the following is not hygroscopic
Which of the following is not hygroscopic
Options
(a) CsCl (b) MgCl₂ (c) CaCl₂ (d) LiCl
Correct Answer:
CsCl
Explanation:
No explanation available. Be the first to write the explanation for this question […]
Beryllium and aluminium exhibit many properties which are similar.
Beryllium and aluminium exhibit many properties which are similar. But, the two elements differ in
Options
(a) maximum covalency in compounds (b) exhibiting amphoteric nature in their oxides (c) forming covalent halides (d) […]
Fish die in water bodies polluted by sewage due to
Fish die in water bodies polluted by sewage due to
Options
(a) pathogens (b) Clogging of gills (c) Decreases in D.O (d) Foul smell
Correct Answer:
Decreases in D.O
Explanation:
Microorganisms from sewage consume […]
Surface water contains
Surface water contains
Options
(a) salt + organic matter (b) only salt (c) organic matter (d) suspended impurity
Correct Answer:
salt + organic matter
Explanation:
Surface water contains salt and organic matter.
Addition of phosphate fertilizers into water leads to
Addition of phosphate fertilizers into water leads to
Options
(a) increased growth of decomposers (b) reduced algal growth (c) increased algal growth (d) nutrient enrichment(eutrophication)
Correct Answer:
nutrient enrichment(eutrophication)
Explanation:
No explanation available. […]
Atmosphere of big/metropolitan cities is polluted most by
Atmosphere of big/metropolitan cities is polluted most by
Options
(a) automobile exhausts (b) pesticide residue (c) household waste (d) radioactive fall out
Correct Answer:
automobile exhausts
Explanation:
Atmosphere of big cities is polluted most […]