Teaching BPSC बिहार मध्य विद्यालय (6 to 8) शिक्षक भर्ती 4.0 Mock Test General Science Chemistry Equilibrium
Salt is used as a preservative in pickles because it :
1
Provides acidic environment to kill microorganisms
2
Reduces moisture content which inhibits the growth of microorganisms
3
Cuts off air so that microorganisms cannot enter
4
More than one of the above
5
None of the above