Preparations and Uses of Caustic Soda
Trending Questions
Q. In which of the following compounds does hydrogen has an oxidation state of -1?
1) CH4
2) NH3
3) HCl
4) CaH2
Q. In which of the following compounds, nitrogen exhibits highest oxidation state? (1) N3H (2) NH2OH (3) N2H4 (4) NH
Q. Sodium hydroxide is produced on a large scale:
by the electrolysis of Na2CO3
by the electrolysis of aqueous solution of
by reacting to water
by adding water to Na2O
Q.
In Castner-Kellner cell for production of sodium hydroxide
Brine is electrolyzed using graphite electrode
Molten sodium chloride is used
Sodium amalgam is formed at mercury cathode
- Brine is electrolyzed with Pt electrodes
Q. Which of the following is soluble in alcohol.
NaCl
NaOH
Na2SO4
Na2CO3
Q. Sodium carbonate is prepared by
- Contact process
- Nessler's process
- Kobe's process
- Solvay's process
Q. 4 Is change in entropy for the conversion of o2 to o3 is negative?
Q. In the Down's process the mixture used for electrolysis is
NaCl + MgF
NaCl + Kcl
NaCl + CaCl2 + KF
NaCl + KF
Q. 10ml of a mixture of CO , CH4 , N2 is exploded with excess of O2 gave a contraction of 6.5 ml . There was if further contraction of 7ml when residual gas was treated with KOH ? What is the composition a of original mixture?
Q. If 10 volumes of dihydrogen gas reacts with 5 volumes of dioxygen gas, how many volumes of water vapour would be produced
Q. Give one method for industrial preparation and one for laboratory preparation of CO and CO2 each.
Q. H2O2 + Fe2+ = Fe3+ + H2O. balance by ion electron method
Q. Reaction of Zn(OH)2 with NaOH produces:
- Na2(ZnO2)
- ZnO
- Na2O
- None of these
Q. Reaction of Zn(OH)2 with NaOH produces
Na2(ZnO2)
None of these
ZnO
Na2O
Q. Reaction of Zn(OH)2 with NaOH produces:
- Na2(ZnO2)
- ZnO
- Na2O
- None of these
Q. Which of the following is soluble in alcohol?
- NaCl
- Na2SO4
- Na2CO3
- NaOH
Q.
What are amphoteric oxides? Give two examples.
Q.
Cl2 + 2NaOH → NaCl + A–– + H2O to form. A is
(Cold & dilute)
NaClO
NaClO3
NaCl
None of these
Q. LiAlH4 is obtained by reacting an excess of ........ with an ethereal solution of AlCl3.
- LiH
- LiCl
- Li
- LiOH
Q. how to calculate oxidation number and what is basic formula to calculte the same?
Q. During the electrolysis of an aqueous solution of NaCl, 10.3 g of chlorine was liberated at STP. Calculate the volume of hydrogen that would be liberated at 20oC and 740 mm of Hg pressure from acidulated water, when the same quantity of current as that used in the electrolysis of NaCl was passed.
- 5521 cc
- 3249 cc
- 3582 cc
- 2843 cc
Q. arrange the following compounds with respect to increasing order of oxidation no. of carbon 1). ch4, 2). ch3oh 3). hcho 4). hcooh
Q. Phosphorus exhibits +3 and +5 oxidation states. However, it forms PH3 only, not PH5. This is because the exhibition of highest oxidation state (+5) of P is not favoured by high ΔaH value of dihydrogen and ΔegH value of hydrogen.
what does ΔaH and ΔegH mean in here?
what does ΔaH and ΔegH mean in here?
Q. An aqueous solution of borax is :
- neutral
- amphoteric
- basic
- acidic
Q. Sodium hydroxide is used in
Manufacture of textiles
Manufacture of rayon
- All
Manufacture of soaps