Question

1.Fe2O3+2Al ---> Al2O3+2 Fe.
the above reaction ia an example of:
a) combination reaction
b) Decomposition reaction
c) Displacement reaction
d) Double decompsition reaction
2.The pH value 1 is for
a)weak acid
b)strong base
c)strong acid
d)weak base
3.which of the following statements is true for acid?
a)bitter and change red litmus to blue
b)sour and change red litmus to blue
c)sour and change blue litmus to red
d)bitter and change blue litmus to red
4.which one of the following can be used as an acid-base indicater by a visually impared student?
a)litmus
b)turmeric
c)vanilla essence
d)petunia leaves
5.which gas is formed as a result of a reaction between metal and acid
a) oxygen
b)nitrogen
c)argon
d)hydrogen



hey guys plz plz plz help me​

Answer 1

Answer:

1. (c) displacement reaction

2. (c) Strong acid

3. (c) sour and changes blue litmus red

4. (c) vanilla essence

5. (d) hydrogen

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