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NATIONAL QUIZ QUESTIONS FOR SCIENCE UNDERGRADUATES SCHOLARSHIP

Total questions: 52

Worksheet time: 58mins

Name
Class
Date
1.

name the group that has a single bond

a)

alkenes

b)

alcohols

c)

alkanes

d)

ethers

2.

the name of this compaund C4H10

a)

METHANE

b)

HEXENE

c)

BUTANOIC ACID

d)

BUTANE

3.

molecules with double/tripple bond

a)

carbocilic acids

b)

alkynes

c)

unsaturated fats

d)

saturated fats

4.

the MP and BP increases as the molecular structure increases

a)

hydrocarbons

b)

ethers

c)

ketones

5.

the type of reaction that occur in alkenes

a)

elimination

b)

substitution

c)

addition

6.

SELECT ONE DISTINGUISHED PROPERTY FOR ACIDS.

a)

CHANGE THE COLOR OF LITMUS PAPER INTO RED.

b)

HAVE A BITER TASTE.

c)

THEIR AQOUS SOLUTIONS DO NOT CONDUCT ELECTERICITY.

d)

THEY ARE USUALLY SOLIDS.

7.

pH below 7.35 is

a)

Alkalosis

b)

Acidosis

c)

Zackosis

d)

Ketone Bodies

8.

Which option is correct? Shifts between the ECF and the ICF is called "osmosis / diffusion"

a)

Osmosis

b)

Diffusion

9.

True or Falce: When pH is above 7.45 it is called Alkalosis

a)

True

b)

False

10.

If you decrease the H+ in a solution the pH will _____________ and the solution will become more ________________

a)

increase, basic

b)

decrease, acidic

c)

increase, acidic

d)

decrease, basic

11.

Objective #13

This is a pedigree that follows blue eyes which is a recessive trait. What is the genotype of the father (square) in generation 1?

a)

Aa

b)

AA

c)

aa

d)

A?

12.

Objective #13

This is a pedigree that follows blue eyes which is a recessive trait. What is the genotype of the mother (circle) in generation 1?

a)

Aa

b)

AA

c)

aa

d)

A?

13.

Objective #13

This is a pedigree that follows blue eyes which is a recessive trait. What is the phenotype of the mother (circle) in generation 1?

a)

Brown

b)

Blue

c)

1 blue, 1 brown

14.

Objective #13

This is a pedigree that follows blue eyes which is a recessive trait. What are the genotypes of the parents (4&5) in generation 2?

a)

Aa, AA

b)

aa, aa

c)

AA, AA

d)

Aa, Aa

15.

Objectives - #4, #5, & #13

This is a pedigree that follows blue eyes which is a recessive trait. If parents in generation 1 had another child, what would the chance be that the child would have blue eyes?

a)

50% (2/4)

b)

75% (3/4)

c)

25% (1/4)

d)

100% (4/4)

16.

95-98% of the animal kingdom

a)

vertebrate

b)

invertebrate

c)

multicellular heterotrophs that sexually reproduce

17.

IS this a cell from an ANIMAL?

a)

No, because it has a cell wall.

b)

No, because animal cells are bigger and have a thicker cell wall.

c)

Yes, because it has mitochondria and a nucleus.

18.

In many cases, insecticides have stopped being effective because new generations of insects

a)

developed mutations from the chemicals.

b)

inherited resistance genes.

c)

are eaten by predators.

d)

haven't been exposed to the insecticide.

19.

Which important role do millipedes play in an ecosystem?

a)

predator/pest control

b)

decomposer/nutrient cycler

c)

pollinator

d)

ecosystem engineer

20.
Which molecule provided by plants accounts for the energy in a herbivore’s diet?
a)
glucose
b)
protein
c)
salt
21.
Which best explains why some fats are recommended as part of a healthy diet?
a)
Fats provide the body with the chemicals necessary for controlling the pH of the blood.
b)
Fats act as a catalyst, reacting with the sugars in fruits and vegetables.
c)
Fats provide the body and its organs with insulation and protection.
22.

Initiation codon of prokaryotes for protein synthesis represents amino acid

a)

Methionine

b)

Formylated methionine

c)

Arginine

d)

Lysine

23.

The circular and double stranded DNA occurs in

a)

Golgi body

b)

Mitochondria

c)

Nucleus

d)

Cytoplasm

24.

A DNA molecule in which both strands have radioactive thymidine is allowed to duplicate in an environment containing non-radioactive thymidine. What will be the exact number of DNA molecules that contains the radioactive thymidine after three duplications

a)

One

b)

Two

c)

Three

d)

Four

25.

In bacteria, catalytic RNA is found in

a)

50S subunit of ribosome

b)

60S subunit of ribosome

c)

30S subunit of ribosome

d)

40S subunit of ribosome

26.

Which histone protein is not a part of nucleosome:-

a)

H2A

b)

H2B

c)

H3 & H4

d)

H1

27.

In a population that is in equilibrium, 64% of its individuals have genotype rr. What is the frequency of R allele in the population?

a)

0.36

b)

0.2

c)

0.04

d)

0.4

28.

1)In the United States, one out of approximately 10,000 babies is born with Phenylketonuria disorder. Approximately what percent of the population are heterozygous carriers of the recessive Phenylketonuria (PKU) allele?

a)

1.98%

b)

19.8%

c)

99%

d)

0.01%

29.

Which of the following is the correct equation for BeerLambert law?

a)

E = A / LC

b)

C = E / AL

c)

A = ELC

d)

L = ACE

30.

A bead sliding on a uniformly rotating wire is ..... Constraint

a)

Holonomic

b)

Non holonomic

c)

Rhenomous

d)

Sclerenomous

31.

The number of independent ways in which a mechanical system can without violating any constraints which may be imposed on the system is called

a)

Number of freedom

b)

Holonomic

c)

Degree of freedom

d)

Constraint

32.

The number of degree of freedom for particle in space has

a)

1

b)

2

c)

3

d)

4

33.

The Lagrangian function L is expressed as ...

a)

V - T

b)

T + V

c)

T - V

d)

T / V

34.

A particle is moving freely in space. Now if the same particle is constraint to move in a one direction then decrease in its degrees of freedom is...

a)

1

b)

2

c)

3

d)

4

35.

The eigen value for the eigen function e6x, operated by d2/dx2 is

(a)  

36.

A particle is confined in one-dimensional box with impenetrable walls at x ± a. Its energy eigenvalues is 2eV. Then the lowest possible energy of particle is

a)

4 eV

b)

2 eV

c)

1 eV

d)

0.1 eV

37.

The common between classical and quantum mechanical fundamental distribution function is :

a)

they all depend upon the quantity that define state only

b)

they all depend only upon the energy of the state

c)

they all depend both on energy and quantity defining state

d)

nothing is common in them

38.

Calculate the de Broglie wavelength of a particle travelling at a velocity of 107 cm/s?

a)

7.7 Å

b)

72.7 Å

c)

0. 727 Å

d)

0.0727 Å

39.

Compute the eigen value for the eigen function e6x, operator d2/dx2

a)

16

b)

36

c)

6

d)

0

40.

The location of an electron is uncertain along the x-axis by 10Å. What is the minimum uncertainity in the electrons momentum component along the x-axis?(h=6.63×10-34Js)

a)

0.527×10-25kgm/s

b)

5.27×10-25kgm/s

c)

0.0527×10-25kgm/s

d)

52.7×10-25kgm/s

41.

Calculate the fourth energy level of an electron in an infinite potential well of width 10 Å?

a)

E4=6.028eV

b)

E4=3.028eV

c)

E4=2.028eV

d)

E4=4.028eV

42.

The brakes applied to a running train produce an acceleration of 0.6 m/s2 in a direction opposite that of motion. If train takes 60s to stop after application of brakes, calculate distance travelled before coming to rest.

a)

1080 m

b)

1200 m

c)

1500m

d)

2156 m

43.

The formula CH3 can represent an anion, a cation or a free radical. Species with molecular formula CH3 can act as an electrophile, a free radical or a nucleophile depending on the number of outer shell electrons on the central carbon atom. How many outer shell electrons must be present for CH3 to act in these different ways ?

a)

A

b)

B

c)

C

d)

D

44.

Which diagram gives the skeletal formula of

2-chloropentan-3-ol ?

a)

A

b)

B

c)

C

d)

D

45.

Which reaction is not an electrophilic addition ?

a)

A

b)

B

c)

C

d)

D

46.

Bromine reacts with ethene to form 1, 2-dibromoethane.

What is the correct description of the organic intermediate in this reaction ?

a)

It has a negative charge

b)

It is a free radical

c)

It is a nucleophile

d)

It is an electrophile

47.

During the bromination of methane, the free radical CH30 is generated. A possible terminating step of this reaction is the formation of C2H6 by the combination of 2 free radicals. What could be produced in a terminating step during the bromination of propane

a)
b)
c)
48.

Which pair of homologous series have the same C:H ratio in their general formula


1) Aldehydes and Ketones

2) Carboxylic acids and esters

3) Alkenes and Ketones

a)

A

b)

B

c)

C

d)

D

49.
The following is an example of an
a)
Alkane
b)
Alkene
c)
Alkyne
50.

Which equation is a propagation step in the conversion of trichloromethane into tetrachloromethane by reaction with chlorine in the presence of ultraviolet light?

a)

CHCl3 + Cl2 ⟶ CCl4 + HCl

b)

●CCl3 + ●Cl ⟶ CCl4

c)

CHCl3 + ●Cl ⟶ CCl4 + ●H

d)

●CCl3 + Cl2 ⟶ CCl4 + ●Cl

51.

An organic compound is found to contain 40.0% carbon, 6.7% hydrogen and 53.3% oxygen.Which of the following compounds could this be?

a)

Ethanol

b)

Ethanoic acid

c)

Methanol

d)

Methanoic acid

52.

Which one of the following mechanisms is not involved in the reaction sequence below?

CH3CH3 → CH3CH2Cl → CH3CH2OH → CH2=CH2 → CH3CH2Br

a)

electrophilic addition

b)

electrophilic substitution

c)

nucleophilic substitution

d)

free-radical substitution