Urea is preferred to ammonium sulphate as a nitrogeneous fertilizer because
Options
(a) it is more soluble in water (b) it is cheaper than ammonium sulphate (c) it is quite stable (d) it […]
Which of the following statements is correct
Options
(a) All halogens except fluorine form oxy acid (b) All halogens form oxy acid (c) Only chlorine and bromine form oxy acid (d) Only iodine […]
Cassiterite is concentrated by
Options
(a) flustation (b) liquation (c) levigation (d) electromagnetic separation
Correct Answer:
Electromagnetic Separation
Explanation:
Cassiterite is a tin stone(SnO2) which consists of non-magnetic & contains wolframite, magnetic impurities (FeWO4). […]
Carborundum is
Options
(a) Al₂(SO₄)₃ (b) AlCl₃ (c) Al₂O₃2H₂O (d) SiC
Correct Answer:
SiC
Explanation:
Silicon carbide (SiC), also known as carborundum is a compound of silicon and carbon with chemical formula SiC. […]
Which one of the following is not a sulphide ore
Options
(a) Magnetic (b) Iron pyrites (c) Galena (d) Sphalerite
Correct Answer:
Galena
Explanation:
No explanation available. Be the first to write the […]
Among the metals Cr,Fe,Mn,Ti,Ba and Mg, the one that cannot be obtained by reduction of its metal oxide by aluminium is
Options
(a) Cr (b) Fe (c) Mg (d) Ba
Correct Answer:
Mg
Explanation: […]
Thomas slag is
Options
(a) CaSiO₃ (b) Ca₃(PO₄)₂ (c) MnSiO₃ (d) CaCO₃
Correct Answer:
Ca₃(PO₄)₂
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
Bauxite is concentrated by
Options
(a) magnetic separation (b) roasting (c) froth floatation process (d) chemical method
Correct Answer:
chemical method
Explanation:
Bauxite (Al₂O₃.2H₂O) is concentrated by chemical method. In this method bauxite […]
Copper pyrite, the chief ore of copper, is
Options
(a) CuFeS₂ (b) Cu₂S (c) CuCO₃.Cu(OH)₂ (d) Cu₂O
Correct Answer:
CuFeS₂
Explanation:
CuFeS₂ is copper pyrite. It is the chief ore of copper. world’s […]
Which one of the following is a false statement
Options
(a) Cell fluid is an example of sol (b) Butter is an example of gel (c) Cheese is an example of emulsion (d) […]
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