SCIENCE TEST 4

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SCIENCE TEST 4

It is not advisable to sleep under a tree at night because of the

1 point

Release of oxygen in lesser amount

Release of oxygen in larger amount

Release of carbon monoxide

Release of carbon dioxide

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Isotopes of the same element differ in the number of

1 point

Protons

Neutrons

Electrons

Positrons

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Honey bees are called social insects because

1 point

They visit all flowers to collect nectar

They live among men

They depend for their food upon other insects

They move socially with other insects

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Which one of the following types of waves are used in a night vision apparatus?

1 point

Radio waves

Microwaves

Infra-red waves

None of the above

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Photo chemical smog is a resultant of the reaction among

1 point

NO2, O3 and peroxyacetyl nitrate in the presence of sunlight

CO, O2 and peroxyacetyl nitrate in the presence of sunlight

CO, CO2 and NO2 at low temperature

high concentration of NO2, O3 and CO in the evening

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Given below are the names of four energy crops.Which one of them can be cultivated for ethanol ?

1 point

Jatropha

Maize

Pongamia

Sunflower

Clear selection

Which one of the following type of micro organisms is most widely used in industries?

1 point

Bacteria

Bacteria and fungi

Bacteria and algae

Bacteria, microalgae and fungi

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Consider the following statements: 1. Dengue is a protozoan disease transmitted by mosquitoes. 2. Retro-orbital pain is not a symptom of dengue. 3. Skin rash and bleeding from nose and gums are some of the symptoms of dengue. Which of the statements given above is/are correct?

1 point

1 and 2

3 only

2 only

1 and 3

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What is the most important factor for the growth of pests in stored grains ?

1 point

The moisture of grains

The temperature of grains

The moisture and temperature of grains

None of the above

Clear selection

Domestic electrical wiring is basically a :

1 point

series connection

parallel connection

combination of series and parallel connections

series connection within each room and parallel connection elsewhere

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