1. A battery converts ___.
A. Chemical Energy to Kinetic Energy
B. Chemical Energy to Electrical Energy
C. Electrical to Chemical and Electrical Energy
2. Chemical substance that speeds up the rate of chemical reaction is called __.
A. Pressure
B. Concentration
C. Catalyst
D. Inhibitors
3. Bases (OH-) are substances that __
A. Are corrosive
B. Turn litmus from blue to red
C. Turns litmus from red to blue
D. Are non-metal oxides
4. Chemical formula of Silver Chloride is ___.
A. Ag2Cl3
B. AgCl
C. AgClO
D. AgCl3 . H20
5. When an acid (H-) is added to alkali (OH-), the product is ___.
A. Hydroxides
B. Water
C. Salts
D. Oxygen gas
6. The reddish-brown rust on iron roofing sheets consists of ___.
A. Fe3O4.2H2O
B. FeO. H20
C. Fe3+ (H2O)6
D. Fe2O3. 3H20
7. Which of the following metals will displace iron from a solution of iron (II) tetraoxosulphate (IV)?
A. Copper
B. Mercury
C. Silver
D. Zinc
8. The IUPAC name of the compound NaAlH4 is ___.
A. Tetrahydridosodium Aluminate (III)
B. Sodium Aluminium Hydride
C. Sodium tetrahydridoaluminate (III)
D. Aluminium Tetrahydrido Sodium
9. 2.5g of a hydrated barium salt gave on heating 2.13g of anhydrous salt. Given that the relative molecular mass of the anhydrous salt is 208, the number of molecules of water of crystallization of the barium salt is ___.
A. 10
B. 7
C. 8
D. 2
10. The type of bonding [Cu (NH3)4]2+ is ___.
A. Dative
B. Electrovalent
C. Metallic
D. Covalent
11.The curve above depicts titration between __.
A. Weak Acid and Weak Base
B. Strong Acid and Strong Base
C. Weak Acid and Strong Base
D. Strong Acid and Weak Base
12. Steam changes colour of anhydrous cobalt (II) chloride from ___.
A. White to blue
B. Blue to pink
C. Oxygen to white
D. White to red
13. The first metal used by man was __.
A. Gold
B. Copper
C. Iron
D. Bronze
14. The forces of attraction that exist between non-polar molecules are called __.
A. Covalent bonds
B. Electrovalent bonds
C. Van der Waals depression
D. Ionic bonds
15. Which of the following salt is used in the preparation of caustic soda, washing soda, hydrochloric acid, bleaching powder etc?
A. Nacl
B. NaSo4
C. Na2O
D. NaNO3
16. What volume of oxygen will remain after reacting 8cm2 of hydrogen with 20cm2 of oxygen?
A. 12cm3
B. 10cm3
C. 16cm3
D. 14cm3
17. During electrolysis of a silver salt, 10920 coulombs of electricity were passed. The number of moles of silver metal deposited is __.
A. 0.110M
B. 0.113M
C. 0.100M
D. 0.13M
18. What is IUPAC name of the compound whose structure is shown below?
A. 1, 2 Dimethyl Propane
B. 2, 2 Dimethyl Propane
C. 2, 3 Dimethyl Propane
D. 1, 2 Methyl Propane
19. An acid and its conjugate base ___.
A. Differ only by a proton
B. Can neutralize each other to form a salt
C. Are always neutral substances
D. Differ only by the opposite changes they carry
20. A gas is contained in 0.050m3 under 8.104 x 105 Pa pressure at 293k. How many moles of gas are in the container?
A. 28.4 mol
B. 13. 6 mol
C. 17.5 mol
D. 16.6 mol
Check NDA questions and answers 21 – 40 here
