Consider the following animals:

1. Sea cow

2. Seahorse

3. Sea lion

Which of the above is/are mammal/mammals?

Concerning the usefulness of the by-products of the sugar industry, which of the following statements is/are correct?

$1$. Bagasse can be used as biomass fuel for energy generation.
$2$. Molasses can be used as a source of feedstocks to produce synthetic chemical fertilizers.
$3$. Molasses can be used for the production of ethanol.
Select the correct answer using the codes given below:

Consider the following:

$1$. Electromagnetic radiation         
$2$. Geothermal energy
$3$. Gravitational force                     
$4$. Plate movements
$5$. Rotation of the earth                
$6$. Revolution of the earth

Which of the above are responsible for bringing dynamic changes in the surface of the earth? 

Improper handling and storage of cereal grains and oilseeds result in the production of toxins known as aflatoxins, which are not generally destroyed by the normal cooking process. Aflatoxins are produced by:  

Which of the following diseases can be transmitted from one person to another through tattooing?

$1$. Chikungunya

$2$. Hepatitis-B

$3$. HIV-AIDS

Select the correct answer using the codes given below.

With reference to the food chains in ecosystems, which of the following kinds of organism is/are known as decomposer organism/organisms?

1. Virus

2. Fungi       

3. Bacteria

Select the correct answer using the codes given below.