302961
Which of the following turns red litmus blue ?
1 Bases
2 Acids
3 Salts
4 None of these
Explanation:
Bases Base turns red litmus blue.
ACIDS, BASES and SALTS
302962
Phenolphthalein is a synthetic indicator and its colours in acidic and basic solutions respectively are:
1 Red and blue.
2 Blue and red.
3 pink and colourless.
4 Colourless and pink.
Explanation:
Colourless and pink. Phenolphthalein remains colourless in acidic solution but turns pink in basic solution.
ACIDS, BASES and SALTS
302963
Neutralization Reaction Is A:
1 Physical and reversible change.
2 Physical change that cannot be reversed.
3 Chemical and reversible change.
4 Chemical change that cannot be reversed.
Explanation:
Chemical change that cannot be reversed. Neutralization reaction is a chemical reaction between acid and base to produce salt and water. It cannot be reversed.
302961
Which of the following turns red litmus blue ?
1 Bases
2 Acids
3 Salts
4 None of these
Explanation:
Bases Base turns red litmus blue.
ACIDS, BASES and SALTS
302962
Phenolphthalein is a synthetic indicator and its colours in acidic and basic solutions respectively are:
1 Red and blue.
2 Blue and red.
3 pink and colourless.
4 Colourless and pink.
Explanation:
Colourless and pink. Phenolphthalein remains colourless in acidic solution but turns pink in basic solution.
ACIDS, BASES and SALTS
302963
Neutralization Reaction Is A:
1 Physical and reversible change.
2 Physical change that cannot be reversed.
3 Chemical and reversible change.
4 Chemical change that cannot be reversed.
Explanation:
Chemical change that cannot be reversed. Neutralization reaction is a chemical reaction between acid and base to produce salt and water. It cannot be reversed.
302961
Which of the following turns red litmus blue ?
1 Bases
2 Acids
3 Salts
4 None of these
Explanation:
Bases Base turns red litmus blue.
ACIDS, BASES and SALTS
302962
Phenolphthalein is a synthetic indicator and its colours in acidic and basic solutions respectively are:
1 Red and blue.
2 Blue and red.
3 pink and colourless.
4 Colourless and pink.
Explanation:
Colourless and pink. Phenolphthalein remains colourless in acidic solution but turns pink in basic solution.
ACIDS, BASES and SALTS
302963
Neutralization Reaction Is A:
1 Physical and reversible change.
2 Physical change that cannot be reversed.
3 Chemical and reversible change.
4 Chemical change that cannot be reversed.
Explanation:
Chemical change that cannot be reversed. Neutralization reaction is a chemical reaction between acid and base to produce salt and water. It cannot be reversed.
302961
Which of the following turns red litmus blue ?
1 Bases
2 Acids
3 Salts
4 None of these
Explanation:
Bases Base turns red litmus blue.
ACIDS, BASES and SALTS
302962
Phenolphthalein is a synthetic indicator and its colours in acidic and basic solutions respectively are:
1 Red and blue.
2 Blue and red.
3 pink and colourless.
4 Colourless and pink.
Explanation:
Colourless and pink. Phenolphthalein remains colourless in acidic solution but turns pink in basic solution.
ACIDS, BASES and SALTS
302963
Neutralization Reaction Is A:
1 Physical and reversible change.
2 Physical change that cannot be reversed.
3 Chemical and reversible change.
4 Chemical change that cannot be reversed.
Explanation:
Chemical change that cannot be reversed. Neutralization reaction is a chemical reaction between acid and base to produce salt and water. It cannot be reversed.
