Which of the following will be the useful control strategies to check outdoor pollution with "fine" particulate matter?:

1. Restriction on the use of two-stroke engines
2. Restriction on burning of biomass
3. Restriction of use of coal as fuel in homes
4. Active measure to control forest fires

Which of the statements given above are correct?

Consider the following health hazards:

1. Lowering of IQ in children.
2. Lowering of systolic blood pressure.
3. Reduced RBC survival and reduced haem biosynthesis.
4. Higher rates of miscarriages, stillbirths and pre-term deliveries.

Which of the above are associated with environmental lead exposure?

Under the Integrated Child Development Scheme, which among the following services are provided?

1. Immunization
2. Supplementary nutrition
3. Primary school education
4. Health check-up

Select the correct answer using the code given below:

Consider the following statements with regard to mass vaccination programmes in a disaster-affected zone:

1. The WHO recommends that the typhoid and cholera vaccines should routinely be given in endemic areas.
2. The mass vaccination of the population against tetanus is usually unnecessary.
3. If tetanus immunization was received more than 5 years ago in a patient who has sustained an open wound, a tetanus toxoid booster is an effective preventive measure.
4. As a large-scale measure, typhoid and cholera vaccines have proven to be effective public health strategy.

Which of the statements given above are correct?

 In India, in the wake of a natural disaster like cyclone, floods, or earthquake, the execution of relief work is essentially the responsibility of

Which one of the following is not required for the formation of photo-chemical smog?