2011 ABU PUTME Sciences

Welcome to your 2011 ABU PUTME Sciences

Name

Mobile number

Dimension of absolute viscosity is ____.

ML-¹T -¹

MLT-¹

ML-¹T

MLT

Turbulent flow generally occurs for cases involving ____.

highly viscous fluid

very narrow passages

very slow-motion

none of these

Forces acting on a particle setting in fluid are _______forces.

gravitational and buoyant

centrifugal and buoyant

gravitational or centrifugal buoyant drag

external, drag and viscous

Which of the following equations applies at terminal viscosity?

mg – V – U = 1

mg – V – U = 0

V + mg – U = ma

U – ma + mg = 0

Which of the following is not a high viscous fluid?

kerosene

glue

grease

glycerine

Mercury is an ideal barometric fluid mainly due to its _____.

high density

low compressibility

low capillary action

very low vapour pressure

Dimension of surface tension is _____.

FL-¹

F-¹ L

FL-²

F-² L

Which of the following has the smallest least effect on the solubility of a solute into the solvent?

nature of the solute

nature of the solvent

temperature

pressure

Which of the following is insensitive to changes in pressure?

Heat of vaporization

melting point

heat of fusion

both B and C

Vapour pressure of water at 100˚C is about ____bar

0.1013

1.013

10.13

101.3

From the following list of type vi mutation. Identify the one that is hereditary.

genetic mutation

somatic mutation

germinal mutation

gametic mutation

Which of these would not be a limiting factor in photosynthesis?

CO2

chlorophyll

light

In a cell digestive enzyme mostly occur in _____

ribosome

lysosome

mitochondria

plastids

Which of the following factors is not associated with aquatic habitat?

temperature

light intensity

humidity

turbidity

Terrestrial organisms which are capable of maintaining their body temperatures constant within fairly close limits are referred to as ____.

thermoclines

protothemes

poikilotherms

eurytherms

Which of the following statements is not true of a climax vegetation?

is ecological phenomenon

is as table community

eliminates competition

results from succession

The causative organisms of sleeping sickness is the _____.

trypanosome

plasmodium

vibrio bacterium

penicillin

From the words lettered A to D, choose the word or group of words that best completes each of the following sentences

Adamu is a very good friend

on _____ I can rely on.

who

whose

which

whom

I ought _____ the letter by now

to be sent

to have being sent

to have sent

to have to send

Edna's fever was so acute that she _____ an injection

had to have

had to had

must have

ought to have

I know of a cow _____ has only three legs.

whom

which

who

of which

Ranti: This is not my key. Ayo: Then ____ Is it?

of which

whose

who’s

whom

There was no meat in the market __ Ada bought some fish.

unless

since

whereas

The police vehicles raced ____ full speed with their sirens blaring.

with

Tutu liked to read detective novels to take his mind ____ his worries.

off

away

out of

from

I don't know what to do with these children. They are always fighting ______

themselves

myself

one another

each of them

Wale couldn't have said a thing like that, _______

could he?

did he?

can he?

would he?

If she had known, she wouldn't have come _______

would she?

wasn’t it?

wouldn’t it?

couldn’t she?

The separation of oil and water with different boiling points can best be achieved by:

fractional distillation

decantation

evaporation

using a separating funnel

Calculate the minimum volume of oxygen that is required for the complete combustion of a mixture of 20cm3 of CO and 25cm3 of hydrogen.

45 cm3

22.5cm3

20 cm3

10 cm3

An increase in temperature causes an increase in the pressure of a gas because there is an increase in the ____

average velocity of the gas molecules

number of collisions between the gas molecules

density of the gas molecules

free mean path between each molecule and the other

A liquid begins to boil when ______

its vapour pressure is equal to the vapour pressure of its solid at a given temperature

molecules start escaping from the surface

its vapour pressure equals the atmospheric pressure

its volume is slightly increased

If the relative rate of diffusion of a gas is 0.25 and that of Cl under the same condition is 0.20. Calculate the relative molecular mass of the gas.

22.7

45.4

68.1

90.8

The following molecules contain hydrogen bonding EXCEPT ______

ammonia

ethanoic acid

hydrogen fluoride

water

If 20 cm3 of distilled water is added to 80cm3 of 0.50mol/dm3 HCl solution, the new concentration of the acid is ____.

0.10 mol/dm3

0.20mol/dm3

0.40mol/dm3

2.00mol/dm3

What is H202 acting as in the equation?

H2O2 + 2Fe2+ ⟶ 2Fe3+

oxidizing agent

reducing agent

an acid

a base

A 12V battery supplying a current of 20A was used to melt 1.5kg of ice at 0˚C. Calculate the time required if the latent heat of fusion of ice is 336 x 10J/kg

35.0 min

3.5 min

76 min

21.0 min

The light from the sun reaches the earth mainly by _____

convection

conduction

radiation

reflection

One valid assumption of the kinetic theory of gases is that _____

the molecules are in random motion and the number of collisions is constant

the number of molecules increases with the pressure

the molecules of the gas are all identical and are very small in size

the number of molecules increases with temperature

An astronomical telescope is said to be in normal adjustment when the ____

eye is accommodated

focal length of the objective lens is longer than that of the eye piece

final image is at the near point of the eye

final image is at infinity

Which of the following parts of a cell is living?

cell wall

calcium oxalate

food vacuole

mitochondria

Cells without an organized nucleus are called ____.

heterokaryote

eukaryote

prokaryote

synkaryote

The sites for energy transfer within a cell are known as _____

Golgi apparatus

parenchyma

mitochondria

nucleolus

Food and dissolved oxygen pass from the water directly into the amoeba by a process called _____

transport

diffusion

fission

transpiration

Which one of these functions is not performed by the nervous system?

receive sensory input from internal and external environment

digestion

integration

response to stimuli

In man, gas exchange occurs in the ______.

heart

white blood cells

lungs

kidney

1 out of 10

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