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

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:- What are the principles you have follow to prevent it?

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.

A group of five members spent in a room with dust. One among them shows some allergic responses. Name the chemicals released during allergy and which cells produce them.

Some information related to the elements of the p block in the 17th group of the periodic table are given in the table below. Complete the able and analyse the following questions. a) What is the family name of element belonging to 17th group? b) what is their common valency? c) Which element has the highest electronegativity? d) Which element has highest ionisation energy? e) List out the name and chemical formula of the compounds formed by this elements with s block elements. '(##VPU_TTT_CHE_X_P01_C01_E02_002_Q01##)'

Read the following statements carefully and select the appropriate option given below. (i) Reproduction is defined as a biological process in which an organism gives rise to the young ones (offspring) similar to itself. (ii) Adventitious buds arise from the notches present at margins of leaves of Bryophyllum. (iii) Asexual reproduction is common among single celled organisms, and in plants and animals with relatively simple organisations. (iv) A few plants exhibit unusual flowering phenomenon, some of them such as bamboo species flower only once in their life time, generally after 50-100 years. (v) The events of asexual reproduction though elaborate and complex, follow a regular sequence.