Dream team test

1.

Two plane mirrors are inclined at an angle of 45° to each other. A ray of light has incident angle of 20° at the surface of the first mirror. The reflected ray is then incident on the second mirror. Calculate the angle of reflection of the second mirror

45°

65°

25°

30°

2.

Which of the following would you expect to show positive iodoform test ? I) Butanone....... (II) Propanoic acid....... III) Ethanol........ Iv) Benzaldehyde...... V) But-2-one

III only

IV and V

I and III

I and II

3.

4g of a radioactive material of half life 10 days is spilled on a laboratory floor. How long would it take to disintegrate 3.5g of the material ?

8(3/4) days

30 days

11/4 days

80 days

4.

An atom has a core and outside the core an electron occupies an orbital for which the principal quantum number, n= 4,I = 0,m= 0 and s= + 1/2. The atom is likely to be ?

A) Boron

B) Sodium

C)Potassium

D)Fluorine

5.

Under constant tension and constant mass per unit length, the note produced by a plucked string is 500HZ when the length of the string is 0.90m . At what length is the frequency 150HZ ?

6m

3m

5m

4m

6.

At this _______ we need to be more diligent.

Junction

Disjunction

Juncture

Junction

7.

Nearest in meaning

Olu is EFFEMINATE

Very friendly

Not manly

Even where

Like partying

8.

A wire V half the diameter and half the length of a wire Z of similar material. The resistance of V to that of Z is ?

8:1

1:1

4:1

2:1

9.

Which of the following is not essential for the production of electron by thermionic emission ?

Tungsten target

Hot cathode

Reflection plate

Fluorescent

10.

Each man and woman ________ given a prize

Were

Are

Was

Are being

11.

One of the substance listed is a good conductor of electricity

Wood

Copper

Carbon

Matches

12.

The building _________ because of weak structural foundation

Tumbles

Crumbles

Succumbed

Caved

13.

Violet or deep red-brown colour observed when hydroxylamine hydrochloride and sodium hydroxide are added to an organic substance confirms the presence of ?

Alkanal

Alkanone

Alkanoate

Alkane

14.

Akin is a chip off the old block....... This means that

Akin is a stubborn boy

Akin resembles his Eldest brother

Akin's father is an old man

Akin resembles his father

15.

The below combustion of one mole of an alkanol is shown below

CnH2n + 1 OH + XO2 -> yCO2 + 2H20......The value of x in terms of n ?

3n + 1/2

3n-1/2

3n/2

3n+3/2

16.

What is the efficiency of a crane that used current 8A at 150V to raise 450kh load at a rate of 7m every minutes ?

42.9%

24.9%

94.2%

29.4%

17.

Every student and Teachear _________ ten naira every week.

Contributes

Contribute

Were contributing

Are contributing

18.

A sample of an organic compound was weighed to be 0.250 g and subjected to Kjedal treatment. The ammonia produced neutralized was neutralized by 27.0 cm^3 of 0.1 mol/dm^3 HCl..... What is the % of Nitrogen in the compound ?.. (N= 14,H= 1)

A)18.4%

B)17.8%

C)15.1%

D)13.3%

19.

The temperature in Kelvin to the nearest whole number at which the Celsius temperature is 2/3 of the Fahrenheit Temperature is ?

-166.3

-106.67

106.67

166.3

20.

The reaction of vegetable oil with a solution of wood ash is

Esterification

Saponification

Neutralization

Hydrogenation

21.

Two bodies P and Q are projected on the same horizontal plane, with the same initial speed but at different angles 30° and 60° respectively to the horizontal, what is the ratio of range of P to Q

1:1

1:_/3

_/3:1

1:2

22.

Since the writer did not indicate his name, the editor decided not to publish such _______ article

A discourteous

An anonymous

Scandalous

Libelous

23.

More than one orange_______ in the basket

Are

Were

Is

None of the above

24.

The wedding was attended by the "CREAM" of the society. This means that the wedding was attended by

Everybody in the society

Only those who were invited

The rich of the society

Only educated people

25.

Which of SF4,SiH4,CO2,ICL,CH2CL2,XeO3 will not show permanent dipole ?

A)CO2 and SiH4 only

B) SF4 and SiH4 only

C)CO2,SiH4 and XeO3

D)SF4,SiH4,CO2 and ICL

26.

During the electrolysis dilute H2SO4 acid solution, 0.05 mole of electrons were passed. What volume of gas was produced at the anode ?

2.24

0.560

0.280

0.224

27.

The bond in CaCl2 is ?

A) Ionic

B) Covalent

C)Hydrogen

D)Metallic

28.

Which of the following is/are always true ? I) Latent heat of vaporization of any substance is always greater than the latent heat of fusion of the substance....... II) Convection requires no material medium...... III) Conduction takes place in solids

I and III

I and II

III only

I only

29.

A boat is passing under a bridge. The deck of the boat is 15m below the bridge. A small package is to be dropped from the bridge onto the deck of the boat when the boat is 25m from just below the drop point. What (boat) speed is necessary to have the package land in the boat ? (g= 9.8m/s^2)

17m/s

14m/s

1.7m/s

4.9m/s

30.

Bonding in NH4OH is ?

Ionic, dative and covalent

Covalent and Dative

covalent and Dative

Ionic

31.

A uniform rod PQ of mass 12kg and length of 1m is pivoted at the end P. If a load of 14N is placed on it at the centre, find the force that should be applied vertically upwards to maintain the rod in equilibrium horizontally

7N

28N

17N

68N

32.

The magazine was __________ by the government for an offensive publication

Prescribed

Proscribed

Prosecuted

Condemned

33.

When a spherical mirror forms a real image, the image relative to the object is always ?

Smaller

Larger

Erect

Inverted

34.

The main product of electrophilic addition of HCL to 2-methylpropene is ?

2-chloro-2-methylbutane

2-chloro-2-methylbutene

2-methyl-2-chloropropane

2-chloro-2-methylpropene

35.

Little Sheila is always as lively as a kitten. This means that Sheila is always

Wearing bright dresses

Very realistic in what she does

Moving quickly like a Kitten

Gay and cheerful

36.

The molarity of 5% by weight of aqueous solution of H2SO4 (molecular weight = 94) is ?

A)0.537 mol/dm^3

B)0.208mol/dm^3

C)0.551 mol/dm^3

D)0.333 mol/dm^3

37.

Which of the following is not associated with a joint ?

Cartilage

Joints

Synovial fluid

Acetabulum

38.

Which of the following phenomenon cannot be explained by the molecular theory of matter ?

Evaporation

Radiation

Expansion

Conduction

39.

I am sure that lady is light fingered...... This means ?

Prone to stealing

Handles things carefully

Skillful with her hands

Fair-skinned

40.

At this _______ we need to be more diligent.

Junction

Disjunction

Juncture

Junction

41.

The quantum number, I in an atom defines ?

The shell K, L, M, N

Orbitals

Multiplicity

Degeneracy of orbitals

42.

Characteristics of Carbonyl group (C=O) is ?

Elimination

Substitution

Addition

Saponification

43.

The Zinc rod in a Leclanche cell is coated with Hg amalgam

To increase Emf

Prevent Local action

Prevent polarization

None of the above

44.

From their electronic configuration, one can predict that the geometric configuration for which of the following molecule is correct ?

A) HF bent (V shaped)

B) H20 tetrahedral

C) BF3 triagonal planar

D) NF3 triagonal planar

45.

An ion has a charge of +3. The nucleus of the ions has a mass of 120. The number of neutrons in the nucleus is 1.50 times that of the protons. How many electrons are in the ion ?

55

48

45

42

46.

____________ disturb most ships nowadays

Bucanceers

Buccaneers

Buccanners

Bucanners

47.

The shortest mirror in which a person 2m high can use to see his entire image is ?

1m

2m

4m

0.5m

48.

An object slides down an inclined plane from an initial height of 30m. It's velocity at the foot of the plane is 20 ms^-1. The % of its initial P. E which is dissipated as heat is ?

33.3333%

50%

66.6667%

75%

49.

The IUPAC name for C(CH3)4 is ?

A) 2,2,2,2- tetramethylethane

B) 2,2-dimethyl propane

C) 2-methylbutane

D)tetramethylcarbide

50.

Shola alongside the group _________ at the party

Are

Were

Is

None of the above