std 6 sanskrut ch 2

Basic question on formation OF quadratic equation || 6 std. graph OF quadratic polynomial

What are STDs? Name two STDs. How can they be prevented?

STD stands for

What is STD? Write the preventive measures of STDs

(a) Expand STDS (b) Cite any two examples for STDs. (c) Suggest any two methods for the prevention of STDs.

All reproductive tract infections RTIs are STDs, but all STDs but all STDs are not RTIs. Justify with example

What do you mean by "STD" ? Give some measures of STD prevention.

Write chemical equations for the following conversions : CH_(3)-CH_(2)-Cl into CH_(3)-CH_(2)-CH_(2)-NH_(2) C_(6)H_(5)-CH_(2)-Cl into C_(6)H_(5)-CH_(2)-CH_(2)-NH_(2)