S Block Elements, Properties of s Block Elements, Atomic and Ionic Radii, Ionization Enthalpy, Hydration Enthalpy.
To explore the fascinating S block elements, known for their unique properties that have an important role to play in basic chemistry of the Periodic Table. Our journey reveals the intricate nature of these elemental protagonists, from their unique atomic and ionic radii, which influence bonding and reactivity, to the crucial role of ionization enthalpy in determining chemical behaviour. Go to Nokryan.com and learn more about the fascinating world of S block elements and chemistry.
1. Down’s cell is used prepare ?
- Sodiumcorrect
- Sodium hydroxide
- Calcium
- Magnesium
2. The oxides of beryllium are ?
- None of these
- Acidic
- Basiccorrect
- Amphoteric
3. Which are being formed by alkali metals ?
- Carbides
- Peroxidescorrect
- Oxides
- Nitrides
4. The mineral CaSO4 2H2O has the general name ?
- Dolomite
- Epsom salt
- Gypsumcorrect
- Calcite
5. Plaster of paris is mixed with water, the expansion in volume is ?
- 2%
- 3%
- 1%correct
- 4%
6. Which one of the following is not alkali metal ?
- Radiumcorrect
- Rubidium
- Francium
- Caesium
7. All alkali metals react with acetylene to form acetylides except ?
- Licorrect
- K
- Na
- Rb
8. Lime is often used as an agent ?
- Reducing
- Oxidizing
- Dehydratingcorrect
- Hydrating
9. Decomposition of carbonates of alkaline earth metals produce gas ?
A = N2
B = Oxide
C = CO2
D = CO
- D
- B
- A
- Ccorrect
10. Which is insoluble carbonate ?
A = KCO 3
B = Ca CO 3
C = Na2 CO 3
D = None of these
- Bcorrect
- A
- D
- C
11. Down’s cell is used to prepare ?
- Sodium metalcorrect
- Sodium carbonate
- Sodium hydroxide
- Sodium bicarbonate
12. Diaphragm cell is used to prepare ?
- Magnesium
- Sodium hydroxidecorrect
- Sodium
- Calcium
13. Acidic soils are neutralized by adding ?
- Plaster of paris
- Limecorrect
- Brine
- Milk of Magnesia
14. Which element is deposited ad the cathode during the electrolysis of brine in Nelson’s cell ?
A = H2
B = Na
C = Cl2
D = O2
- B
- C
- D
- Acorrect
15. cement plaster is made by mixing plaster of paris with ?
- Gypsom
- Glue or oilcorrect
- glycol
- Alum or borax
16. Which of the following sulphates is not soluble in water ?
- Sodium sulphate
- Zinc sulphate
- Barium sulphatecorrect
- Potassium sulphate
17. Chlorophyll contains in it ?
- Li
- Na
- Mgcorrect
- Ca
18. Which is used in plaster of paris to make hard finish plasters ?
- glue or oil
- Glycol
- gypsom
- Alum or boraxcorrect
19. Chile saltpetre has the chemical formula ?
A = NaNO 3
B = KNO 3
C = Na 2 B 4 O 7
D = None of these
- D
- A
- Bcorrect
- C
20. CO 2 absorber used in breathing tanks is ?
A = K2 O2
B = K2 O
C = KO2
D = Na2 O 2
- D
- A
- Ccorrect
- B
21. Which one of the following does not belong to alkaline earth metals ?
- Ba
- Rncorrect
- Be
- Ra
22. Which oxide is insoluble ?
A = Li2 O
B = Na2 O
C = K2
D = Ba O
- B
- D
- Acorrect
- C
23. Which ion will have the maximum value of heat of hydration ?
A = Na +
B = Cs +
C = Ba +2
D = Mg +2
- B
- Dcorrect
- A
- C
24. Milk of lime is ?
A = Mg O
B = Ca
C = Ca (OH) 2
D = None of these
- Ccorrect
- A
- B
- D
25. Gypsom added in cement is ?
- 1%
- 3%
- 2%correct
- 4%
Chemistry
- Basic Concepts
- Experimental Techniques
- Gases
- Liquids and Solids
- Atomic Structure
- Chemical Bonding
- Alcohols, Phenols And Ethers
- Solutions
- Chemical Equilibrium
- Electro Chemistry
- Periodic Classification Of Elements & Periodicity
- The Halogens and Noble Gases
- Group III A And IV A Elements
- S-Block Elements
- Fundamental Principles of Organic Chemistry