Match the following organisms with the products they produce: Column - I Column – II ( a ) Clostridium butylicum ( i ) Lactic acid ( b ) Saccharomyces cerevisiae ( i i ) Butyric acid ( c ) Aspergillus niger ( i i i ) Citric acid ( d ) Acetobacter aceti ( i v ) Alcohol ( v ) Acetic acid

a - i i ; b - i v ; c - i i i ; d - v

a - i i ; b - i v ; c - v ; d - i i i

a - i i i ; b - i v ; c - v ; d - i

a - i i ; b - i ; c - i i i ; d - v

Differentiate between the following pair based on the information given in the bracket. Acid and Alkali (formation of the type of ions)

An Acid is a sour-tasting substance that dissociates in water to give hydrogen ions whereas an alkali is a water-soluble base that dissociates in water to give hydroxyl ions.

EASY

Earn 100

Which vitamin is added during curdling of milk?

50% studentsanswered this correctly

Important Questions on Acids and Bases

MEDIUM

Science>Chemistry>Acids and Bases>Naturally Occuring Acids

Match the following organisms with the products they produce:

	Column - I		Column – II
$(a)$	Clostridium butylicum	$(i)$	Lactic acid
$(b)$	Saccharomyces cerevisiae	$(i i)$	Butyric acid
$(c)$	Aspergillus niger	$(i i i)$	Citric acid
$(d)$	Acetobacter aceti	$(i v)$	Alcohol
		$(v)$	Acetic acid

EASY

Science>Chemistry>Acids and Bases>Naturally Occuring Acids

Lactic acid bacteria (LAB) grow in milk and convert it to curd and also improve its nutritional quality by increasing

EASY

Science>Chemistry>Acids and Bases>Naturally Occuring Acids

Conversion of milk to curd improves its nutritional value by increasing the amount of

MEDIUM

Science>Chemistry>Acids and Bases>Naturally Occuring Acids

What is Bronsted-Lowry acid?

MEDIUM

Science>Chemistry>Acids and Bases>Naturally Occuring Acids

Acid used in Lead Batteries is:

HARD

Science>Chemistry>Acids and Bases>Naturally Occuring Acids

Match the following list of microbes and their importance:

	Column I		Column II
A	Lactobacillus	(i)	Production of genetically-engineered clot busters
B	Monascus purpureus	(ii)	Production of citric acid
C	Streptococcus	(iii)	Conversion of milk into curd
D	Aspergillus niger	(iv)	Production of blood-cholesterol lowering agents