Science and Technology

Which of the following activities involves digital signal?

(i) talking with each other

(ii) chatting on the internet

(iii) watching antenna connected TV

(iv) speaking through a loudspeaker

Which of the following group belongs to Plant Kingdom?

(i) Fungi

(ii) Protista

(iii) Algae

(iv) Monera

Which blood vessel carries the deoxygenated blood from the heart to the lungs?

(i) venecava

(ii) pulmonary artery

(iii) pulmonary vein

(iv) aorta

Which of the following reptiles is NOT included in the list of protected animals of Nepal?

(i) Gharial crocodile

(ii) Python

(iii) Golden monitor lizard

(iv) Turtle

What will be the weight of an object on the planet having acceleration due to gravity $2.5\text{ m/s}^2$ if the object weighs $700\text{ N}$ on the Earth?

(i) 240 N

(ii) 1750 N

(iii) 175 N

(iv) 700 N

Why does an empty plastic bottle forcefully pushed into the water come up when it is released?

(i) Due to up thrust exerted by the bottle on water.

(ii) Due to up thrust exerted by the water on plastic bottle.

(iii) Due to pressure of water on plastic bottle.

(iv) Due to pressure of plastic bottle on water.

Study the given figure and identify colour of the x and y.

(i) x - red, y - yellow

(ii) x - violet, y - red

(iii) x - green, y - violet

(iv) x - red, y - violet

Which theory is closely related to Hubble's study?

(i) Heliocentric theory

(ii) Geocentric theory

(iii) Big-bang theory

(iv) Hubble's theory

Which of the following is the alkyne having 5 carbon atoms?

(i) pentane

(ii) Pentene

(iii) Pentyne

(iv) Pentyl

Which of the following is a group of rodenticide.

(i) Malathion, aldrin, benzene hexachloride.

(ii) DDT, sodium chloride, aldrin

(iii) Potassium chloride, aldrin, malathion

(iv) Bromadiolan, cumatetralyl, zinc phosphide.