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- 1. Multiple ChoiceAll of the following would classify an element as a metal except?DullLusterMalleableHard
- 2. Multiple ChoiceIron is a good conductor, malleable and magnetic. What type of element is Iron?MetalNonmetalMetalloidPretty
- 3. Multiple ChoiceAt room temperature metals are ____________.plasmagasesliquidsolid
- 4. Multiple Choice
Name the metal which is in liquid state.
Iron
Mercury
Zinc
Aluminium
- 5. Multiple ChoiceJohn was observing the physical properties of elements in order to classify them as either a metal, nonmetal, or metalloid. The first element was dull, brittle, and did not conduct heat. What would its classification be?metalnonmetalmetalloid
- 6. Multiple Choice
A student tested the conductivity of four elements using an incomplete electrical circuit. When the element is placed in the circuit, the bulb lights up brightly, lights up dimly, or does not light up at all based on the element’s ability to conduct electricity. The table below shows the results of her investigation. Based on the results of the conductivity test, which element is classified as a metal?HydrogenArsenicKryptonCopper - 7. Multiple Choice
The metal which can be cut with knife.
Iron
Silver
Sodium
Magnisium
- 8. Multiple ChoiceA chemical bond resulting from the electrostatic attraction between positive and negative ions is called a(n)covalent bond.ionic bond.charged bond.dipole bond.
- 9. Multiple Choice
Potassium (K), an alkali metal, and magnesium (Mg), an alkaline earth metal, both combine readily with bromine (Br), a halogen. What compound will each element (K and Mg) most likely form with bromine?
KBr and Mg2Br
KBr and MgBr
K2Br and Mg2Br
KBr and MgBr2
- 10. Multiple Choice
Unknown element W has 2 valence electrons. Unknown element X has 7 valence electrons. Which formula shows the most likely outcome when elements W and X react?
WX
WX2
W2X
W2X2
- 11. Multiple Choice
Amphoteric oxides react with both acids and alkali to form salt and water.Pick the amphoteric oxide
Aluminium oxide
calcium oxide
zinc oxide
Both aluminium and zinc oxide
- 12. Multiple Choice
What is just so typical of NON-metals?
High melting point
Malleable.
Form acidic oxides.
Good conductors of electricity.
- 13. Multiple Choice
Which one of the following metals do not react with cold as well as hot water?
Na
Ca
Mg
Fe
- 14. Multiple Choice
Which of the following are not ionic compounds?
(i) KCl
(ii) HCl
(iii) CCl4
(iv) NaCl
(i) and (ii)
(ii) and (iii)
(iii) and (iv)
(i) and (iii)
- 15. Multiple Choice
Al2O3 + 2NaOH → …… + H2O
Al(OH)3
Na2O
NaAlO2
AlNaO2
- 16. Multiple Choice
Zn, Fe, Al and Mg. When we arrange these elements in the ascending order of their reactivity series we get
Mg < Al < Zn < Fe
Al < Mg < Fe < Zn
Zn < Al < Mg < Fe
Fe < Zn < Al < Mg
- 17. Multiple Choice
Hydrogen gas is not liberated when a metal reacts with HNO3. This is because
HNO3 is a
Weak oxidizing agent
Strong oxidizing agent
Weak reducing agent
Strong reducing agent
- 18. Multiple Choice
If iron nails are added to zinc sulphate solution ,the possible observation can be
No reaction takes place
A silvery white coating appears on iron nails
A black coating appears on iron nails
A pale green colour of solution is seen
- 19. Multiple Choice
Assertion (A)- Gas bubbles are observed when sodium carbonate is added to dilute HCl
Reason (R)- Carbon dioxide is given off in the reaction
Both A and R are true and R is the correct explanation of A
Both A and R are true and R is not the correct explanation of A
A is true, R is false
A is false, R is true
- 20. Multiple Choice
Which one among the following is an acidic oxide?
Na2O
CO
CO2
Al2O3
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