The incidences of STDs are high among persons in the age group of 15-24 years:-
What are the principles you have follow to prevent it?

The incidences of STDs are high among persons in the age group of 15-24 years:- What is STD?

The incidences of STDs are high among persons in the age group of 15-24 years:- Name some common STDs (Any four).

A man’s age after 15 years will be the square of his age 15 years ago. What is his present age?

You are working as a volunteer in an AIDS awareness programme. If a person comes to you and asks the following questions, how will you answer? What are the precautions to be taken to prevent AIDS?

Periodic table in a chart in which elements having similar chemical and physical properties are grouped together. Group the following elements in pairs that you would expect to show similar chemical properties K, F, O, Na, Cl, S.

IQ of a person is given by the formula IQ = (MA)/(CA) xx 100 , where MA is mental age and CA is chronological age. If 80 le IQ le 140 for a group of 12 years old children find the range of their mental age.

High calorific value is one among the properties that a substance must possess to be considered as a good fuel . What are the other properties a substance must have in order to be considered as a good fuel ?

From the employees of a company, 5 persons are selected to represent them in the managing committee of the company. Particulars of five persons are as follows: A person is selected at random from this group to act as a spokesperson. What is the probability that the spokesperson will be either male or over 35 vears?