NEW
Font size
WorksheetsACID BASES AND SALTS--02( 07/08/2020)
Total questions: 10
Worksheet time: 5mins
There are many other natural materials like red cabbage leaves, turmeric, colored petals of some flowers such as_____________+_______________+___________ which indicate the presence of acid or base in a solution.
HYDRANGEA
PETUNIA
GERANIUM
ALL OF THESE
Litmus solution is a
------- dye, which is extracted from lichen, a plant belonging to the division THALLAOPHYTA and is commonly used as an indicator
PURPLE
RED
BLUE
ORANGE
You already know that acids are __________ in taste and change the colour of blue litmus to red
SOUR
SWEET
SALTY
SPICY
bases are bitter and change the colour of the ________ litmus to blue
BLUE
PURPLE
RED
BLACK
If someone in the family is suffering from a problem of acidity after overeating, which of the following would you suggest as a remedy– _______+__________+_______ solution?
lemon juice
vinegar
baking soda
all of these
synthetic indicators such as_________+_____+________ to test for acids and bases
phenolphthalein
methyl orange
methylene blue, crystal violet
all of these
the formula of acetic acid is?
(CH3COOH)
(NaOH),
(NH4OH).
(HNO3),
the formula of hydrochloric acid is?
(H2SO4)
(HNO3)
(CH3COOH
(HCl),
There are some substances whose odour changes in acidic or basic media. These are called __________ indicators
synthetic indicators
natural indicators
olfactory indicators
gustatory indicators
Acid + Metal → Salt + __________ gas
nitrogen
oxygen
methane
hydrogen
