"It is dangerous to take drugs without prescription of a doctor at early months of pregnancy". Comment on this statement.

In the normal working of a transistor , the emitter is forward biased and collector is reverse biased. a. Comment on the above statement . b. Can we exchange emitter and collector of a transistor ? c. Base region of a transistor is made very thin and lightly doped. Why ? d. "Eventhough the collector - base is reverse biased, the current flow takes place with out experiencing much high resistance" , Give your explanation.

Shylesh is a school going kid studying standard VIII. He is crazy about playing video games in mobile phones .After couple of months , his eyes turned red and he felt severe pain in his eyes. His science teacher enquired about this and advised his parents to take him to consult an eye doctor. What are the values shown by the teacher ?

In each of the following questions, there are two statements. One is assertion (A) and other is reasoning (R) Mark the correct answer as a. A and R correct, R is the correct explanating of A. b A and R are correct but R is not the correct explanatin of A c. A is correct R is false d. Both A and R are false. Assertion: MTP is a voluntary or intentional termination of pregnancy in a surgical way Reason : Government of India legalized MTP without any restrictions.

Ramu was 15 vears old when he went to a doctor to check his blood pressure. His pressure was around 158/98mmHg. The doctor advised him to measure his blood pressure at home for two weeks. He came to the doctor saying his average blood pressure was around 160/100mmHg. Doctor concludes that Ramu has high blood pressure or hypertension. If not controlled, hypertension can lead to heart failure, stroke and kidney failure. He returned to the doctor after two months after taking the drug, ACH inhibitor. This chemical blocks the production of angiotensin II, a powerful vasoconstrictor, so his blood pressure returned back to normal. 1. Why are people with high blood pressure at greater risk for having a hemorrhagic stroke? 2. Without medication Ramu's blood pressure was around 160/100mmHg after two weeks. Why this pressure was referred to as hypertension by the doctor. 3. Blocking the action of vasoconstrictor lower the blood pressure? Give reasons. 4. What is the role of ACH inhibitor in reducing blood pressure? 5. What conditions one might expect if the blood pressure is not controlled?

Shylesh is a school going kid studying standard VIII. He is crazy about playing video games in mobile phones .After couple of months , his eyes turned red and he felt severe pain in his eyes. His science teacher enquired about this and advised his parents to take him to consult an eye doctor. How does excessive usage of mobile phones affect our eyes ?