CO₂ is obtained by heating
CO₂ is obtained by heating Options (a) NaHCO₃ (b) Na₂CO₃ (c) MgCO₃ (d) K₂CO₃ Correct Answer: NaHCO₃Explanation:No explanation available. Be…
7 years ago
Chemistry
Melting point is the higher for
Melting point is the higher for Options (a) Ga (b) B (c) In (d) Al Correct Answer: BExplanation:In the boron…
7 years ago
Li occupies higher position in the electrochemical series of metals as compared
Li occupies higher position in the electrochemical series of metals as compared to Cu since Options (a) the standard reduction…
7 years ago
Alum in dyeing of clothes is used as
Alum in dyeing of clothes is used as Options (a) bleaching agent (b) fire proof material (c) mordant of colour…
7 years ago
The constituents of porland cement are
The constituents of porland cement are Options (a) CaCO₃+clay+sand (b) CaCO₃+aluminium silicate (c) CaCO₃+clay+SiO₂ (d) CaCO₃+gypsum+clay Correct Answer: CaCO₃+gypsum+clayExplanation:The essential…
7 years ago
First ionization potential of Mg is
First ionization potential of Mg is Options (a) less than Al (b) equal to Al (c) more than Al (d)…
7 years ago
In the manufacture of cement which of the following is used
In the manufacture of cement which of the following is used Options (a) clay and silica (b) limestone and clay…
7 years ago
Aluminium reacts with caustic soda to form
Aluminium reacts with caustic soda to form Options (a) aluminium hydroxide (b) aluminium oxide (c) sodium metaaluminate (d) sodium tetraaluminate…
7 years ago
The hydration energy of Mg²⁺ is greater than that of
The hydration energy of Mg²⁺ is greater than that of Options (a) Na⁺ (b) Be²⁺ (c) Mg³⁺ (d) Al³⁺ Correct…
7 years ago
NaOCl is used as a bleaching agent and sterilising agent. It can be synthesized
NaOCl is used as a bleaching agent and sterilising agent. It can be synthesized by the action of Options (a)…
7 years ago