Cada pergunta deste Quiz é cronometrada.
Tasting is the best way to identify if a solution is acidic or basic.
In neutral solution, litmus is ________ in colour.
Red
Blue
Purple
Green
Which of the following can be used as acid-base indicators? Select all correct options
Safranin
Bromthymol blue
Methyl orange
Methylene blue
Onion and vanilla are ___________.
Acids
Bases
Visual indicators
Olfactory indicators
Which indicator is pink in alkaline solution?
Phenolphthalein
Litmus
Lichens are symbiotic relatonships between:
Protozoa and fungi
Algae and fungi
Algae and protozoa
Bacteria and fungi
Which of tbe following can be used as visual indicators?
Turmeric, clove oil and red cabbage
Red cabbage, petals of Geranium and vanilla extract
Petals of Geranium, red cabbage and turmeric
Green cabbage, turmeric and clove oil
The characteristic smell of onion disappears when _________ is added to it.
Tartaric acid
Ammonium hydroxide
Vegetable oil
A dark blue colour on pH paper indicates that the test solution is basic in nature.
What will be the colour of litmus solution when it is tested with detergent solution?
Depends on the brand of the detergent
