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5

Which scientist is credited with proposing the theory of evolution by natural selection? A) Gregor Mendel
B) Charles Darwin
C) Louis Pasteur
D) Linnaeus

B) Charles Darwin

5

Which of the following represents the correct half-reaction for the reduction of copper ions to copper metal?

A) Cu²⁺ + 2e⁻ → Cu

B) Cu → Cu²⁺ + 2e⁻

C) Cu → Cu⁺ + e⁻

D) Cu⁺ + e⁻ → Cu

A) Cu²⁺ + 2e⁻ → Cu

5

Red Question

Which of the following is the derivative of f(x)=3x^2+2x? 

A) 6x+2 B) 3x^2+2x C) 6x+2x D) 6x+2x^2


A) 6x+2

5

Which of the following is a primary function of a sensor? A) To convert physical quantities into electrical signals B) To store data for future analysis C) To generate mechanical energy D) To regulate temperature in a system

A) To convert physical quantities into electrical signals

5

what is the largest planet in the solar system?

a) Jupiter  b)Earth  c) Saturn d) Mars

a) Jupiter

10

Which of the following is an example of an abiotic factor in an ecosystem? A) Plants
B) Sunlight
C) Predators
D) Decomposers

B) Sunlight


10

What is the standard electrode potential (E°) of the following cell if the half-reactions are as follows:

Ag++e−→Ag+e−→Ag (E° = 0.80 V)

Cu2++2e−→Cu (E° = 0.34 V)

A) 0.46 V

B) 1.14 V

C) 0.80 V

D) 0.34 V

A) 0.46 V

10

If f(x)=1/2x^3−4x^2+6x+1 , what is f′(x)?

A) 3/2x^2−8x+6

B) 3/2x^2−8x 

 C)3/2x^3−8x^2+6

 D) 3/2x^3−8x^2+6x 

A) 3/2x^2−8x+6

10

What principle is commonly used in a thermocouple sensor? A) Photoelectric effect B) Hall effect C) Seebeck effect D) Piezoelectric effect

C) Seebeck effect

10

Golden Question

How many surah are there in Quran?

A) 112    B)114     C) 116      D)118

 

B)114

15

Which organelle is responsible for the production of energy in a cell? a) Nucleus b) Mitochondria c) Endoplasmic reticulum d) Golgi apparatus

b) Mitochondria

15

Which of the following reactions represents a nucleophilic substitution reaction?

A) Esterification

B) Hydrogenation

C) Saponification

D) Halogenation of an alkane

D) Halogenation of an alkane

15

What is the integral of e^2x dx?

A) e^2x/2+C  

B) e^2x+C 

c) 2e^2x+C

D) 1/2 e^2x+C

A) e^2x/2+C  

15

Golden Question

Which of the following sensors is primarily used for detecting distance? A) Thermistor B) Photodiode C) Ultrasonic sensor D) Strain gauge

C) Ultrasonic sensor

15

Red Question

What is the actual largest desert in the world?

a) Sahara Desert b) Gobi Desert c) Arabian Desert d) Antarctica

d) Antarctica

20

Which of the following best describes biodiversity? A) The variety of ecosystems within a specific geographic area B) The number of species present in an ecosystem C) The genetic variation within and between species D) The total biomass of organisms in a habitat

C) The genetic variation within and between species

20

What is the major product obtained from the following reaction? CH3CH2CH2Br+KOH→?

A) CH₃CH₂CH₂OH

B) CH₃CH₂CH₂COOH

C) CH₃CH₂CH=CH₂

D) CH₃CH₂CH₂CHO

A) CH₃CH₂CH₂OH

20

If f(x)=x^3−4x^2+5x+2, what is f′′(x)?

A) 6x−8

B) 3x^2−8x+5

C) 6x^2−8x+5

D) 3x^2−8x  

C) 6x^2−8x+5

20

In a strain gauge, what property changes in response to applied force or strain? A) Resistance B) Inductance C) Capacitance D) Voltage

A) Resistance

20

what is the largest country in Africa ?

a) Nigeria b) Algeria c) Egypt d) Sudan

b) Algeria

25

In genetics, what term describes the phenomenon where one gene influences multiple, seemingly unrelated phenotypic traits? A) Epistasis B) Pleiotropy C) Polygenic inheritance D) Codominance

 B) Pleiotropy

25

Which of the following compounds undergoes E1 elimination most readily?

A) 2-methylpropane

B) 2-methylbutane

C) 2-methylpentane

D) 2-methylhexane

A) 2-methylpropane

25

Given f(x)=1/x, what is the area enclosed between the curve, the x-axis, and the lines x=1 and x=3?

A) ln⁡(3)−ln⁡(1)ln(3)−ln(1)

B) ln⁡(3)−ln⁡(1)+2ln(3)−ln(1)+2

C) ln⁡(3)−ln⁡(1)−2ln(3)−ln(1)−2 

D) ln⁡(3)−ln⁡(1)−1ln(3)−ln(1)−1  

B) ln⁡(3)−ln⁡(1)+2ln(3)−ln(1)+2

25

What is the typical operating principle of a piezoelectric sensor? A) Variation in resistance with temperature B) Generation of electric charge under mechanical stress C) Production of magnetic field in response to current D) Emission of photons under excitation

 B) Generation of electric charge under mechanical stress

25

How many countries are there in the United Kingdom?

A)2    B)3    C)4    D)5

C)4

30

What are 4 four types of evolution?


divergent evolution, convergent evolution, parallel evolution, and coevolution   

30

In a galvanic cell, where oxidation and reduction reactions occur, which electrode does reduction take place at?  

Cathode

30

If f(x)=xsin⁡(x)f, what is the value of ∫0π   f(x) dx?


π

30

In a thermistor, how does resistance change with temperature?

Exponentially

30

Three countries with a letter 'f' ?

France , Finland , Fiji