Which of the following is / are correct statements about the Millimeter waves, sometimes seen in news?

1. These are among the highest radio frequency band
2. They have higher wavelength than Microwaves
3. They are most notably used in security appliances

Select the correct option from the codes given below:

Which among the following is / are correct statements with reference to Caffeine:
1. Apart from Coffee, Cacao also contains Caffeine
2. Caffeine is also a common ingredient of soft drinks, such as cola
3. Tea contains more caffeine than coffee by dry weight Select the correct option from the codes given below:

Consider the following statements about the disease “Mad Cow”:

1. The disease is an  infectious viral disease of cattle
2. Megavirus (MGVC) is mainly responsible for the disease

Which of the above statements is/are correct?

Unnat Bharat Abhiyan is an initiative of:

Which of the following statements is correct about El-Nino?