A body moving with an initial velocity 5ms^-1 and accelerates at 2ms^-2. Its velocity after 10s is

(a)

20ms^-1

(b)

25ms^-1

(c)

5ms^-1

(d)

22.55ms^-1

The velocity of a freely falling body ______

(a)

decreases

(b)

zero

(c)

increases

(d)

equal to one

For a simple distillation process we need to have

(a)

an evaporating dish

(b)

a separating funnel

(c)

a filter with filter paper

(d)

a Liebig condenser

Energy is neither given out nor absorbed in the preparation of_____

(a)

element

(b)

compound

(c)

mixture

(d)

solvent

Botanical name of common dandelian is________________.

(a)

Ipomoea alba

(b)

Mimosa pudica

(c)

Helianthus Annuus

(d)

Taraxacum officinale

Photosynthesis occurs in most plants during the________________.

(a)

Summer season

(b)

Winter season

(c)

Night time

(d)

Day time

Hermaphrodite organisms are

(a)

Hydra, Tape worm, Earthworm, Amphioxus

(b)

Hydra, Tape worm, Earthworm, Ascidian

(c)

Hydra, Tape worm, Earthworm, Balanoglossus

(d)

Hydra, Tape worm, Ascaris, Earthworm

Phillippine goby is found in___________.

(a)

marine water

(b)

brackish water

(c)

salt water

(d)

fresh water

Which of the following is true?

(a)

1 J = 412 calorie

(b)

1 J = 0.24 calorie

(c)

1 calorie = 4.2 J

(d)

Both b and c

Covalent bond is formed by_________

(a)

transfer of electrons

(b)

sharing of electrons

(c)

sharing a pair of electrons

(d)

transfer of electrons

_______________is an example of a covalent compound having high melting point

(a)

Magnesium oxide

(b)

Silicon carbide

(c)

Ammonia

(d)

All the above

In a certain type of cell division the diploid number of chromosome is reduced to half. This kind of division occurs in

(a)

testis

(b)

ovary

(c)

both ovary and testis

(d)

all body cells

___________is an essentional part of the computer

(a)

Keyboard

(b)

CPU

(c)

Mouse

(d)

Wi-Fi

The velocities of sound waves in four media P, O, Q, R and S are 18,00 km/h, 900 km/h, 0 km/h, and 1200 km/h respectively. Which could be a liquid medium?

(a)

R

(b)

Q

(c)

P

(d)

S

The phenomenon of echo of sound waves is due to _____________.

(a)

Reflection

(b)

Interference

(c)

Diffraction

(d)

All of the above

Which of the following is prepared by heating CaO and coke?

(a)

CaC₂

(b)

CaCO₃

(c)

CO₂

(d)

CO

Which of the following is one of the strategies to conserve water?

(a)

Water recycling

(b)

Increasing the number of bore wells

(c)

Using large overhead water tanks

(d)

Watering the plants using hose

Nowadays organic farming and organic products are very popular, which of the following is the reason for people to prefer this kind of products.

(a)

Organic food may have higher nutritional value than conventional food

(b)

Consuming organic food may also reduce exposure to artificial chemicals

(c)

it reduces air pollution

(d)

All the above

Severity of disease symptom depends upon

(a)

number of microbes

(b)

target organ

(c)

both a and b

(d)

none of these.

Carrier of malaria causing protozoa

(a)

Cockroach

(b)

Housefly

(c)

Butterfly

(d)

Female Anopheles mosquito