Biology
What are the three major parts of nucleotides?
Sugar, Phosphate, Nitrogenous Base
Identify which combination of processes would involve only an exothermic change.
A. Melting and Boiling
B. Melting and Freezing
C. Deposition and Freezing
D. Sublimation and Deposition
C. Deposition and Freezing
The side of a cube is measured with an uncertainty of 2%.What is the uncertainty in the volume of the cube?
A. 2%
B. 4%
C. 6%
D. 8%
C. 6%
Which of the following is a computer network:
A) LAN
B) VPN
C) Ethernet
D) RAM
A) LAN
Determine the DNA code sequence that gave rise to the following mRNA sequence: AUG CCG UAA CAA GUC
TAC GGC ATT GTT CAG
How many neutrons are there in the ion 18O2–?
A. 8
B. 10
C. 16
D. 20
B. 10
A person of mass m stands on weighing scales in an elevator.The elevator is accelerating upwards with acceleration a. The reaction force from the scales on the person is R. What is the reading on the scales?
A. Mg
B. R+ma
C. R−ma
D. R
D. R
Which logic gate means ‘either the value of A is true or B is true, both cannot be true and both cannot be false.:
NOR, XOR, OR, AND
XOR
Which phase of Meiosis does the following micrograph show?
Anaphase II
Which among the following is known as Quick Lime?
[A] CaO
[B] CaCO2
[C] Ca(OH)2
[D] CaCl2
Answer A - Calcium oxide (CaO), commonly known as quicklime or burnt lime, is a widely used chemical compound. It is a white, caustic, alkaline crystalline solid at room temperature.
The pressure of a fixed quantity of ideal gas is doubled. The average speed of the molecules is also doubled. The original density of the gas is ρ. Which is the new density of the gas?
A. ρ/2
B. ρ
C. 2ρ
D. 4ρ
A. p/2
Which of the following is an not OSI model layer:
A) Session layer
B) Data link layer
C) Storage layer
D) Transport layer
C) Storage layer
In this case, DNA evidence is being used in a wrongful conviction case. Is the prisoner really guilty? A = trace evidence B = homeowner C = prisoner
NO. Without a stronger match, the evidence is insufficient to convict the suspect. He should be released and a new suspect found. DNA evidence is being reviewed in many wrongful conviction lawsuits.
Which of the following is correct about HCl gas?
[A] It is a colourless and pungent smelling gas
[B] It is extremely soluble in water
[C] Both a and b
[D] None
[C] Both a and b
- It is a colourless and pungent smelling gas
- It is extremely soluble in water
Which of the following does not apply to longitudinal waves?
A. Superposition
B. Formation of standing waves
C. Interference
D. Polarisation
D. Polarisation
The binary ‘11010101’ is what in decimal:
A) 213
B) 666
C) 204
D) 906
A) 213
Deduce the genotypes of the selected individuals.
Answer:
A- Cc
B- Cc
C- cc
D- Cc
Which of the following is the balance equation for Aluminium + Copper chloride – Aluminium chloride + Copper?
[A] 2Al + 2CuCl3 – 2AlCl3 + Cu
[B] Al + 2CuCl2 – AlCl3 + 2Cu
[C] 2Al + 3CuCl2 – 2AlCl3 + 3Cu
[D] None of the above
[C] 2Al + 3CuCl2 – 2AlCl3 + 3Cu
Aluminium + Copper chloride --> Aluminium chloride + Copper.
A body that started from rest moves with constant acceleration in a straight line. After travelling a distance d the speed of the car is v. What is the distance travelled when the speed of the car was 2v?
A. d/2
B. d/root2
C. d/4
D. d/2root2
C. d/4
What is the problem in the following pseudocode for the output of the first 10 numbers of any table: (List any 2 problems)
a = input (“Enter the table”)
b = 1
loop while b<=10
b++
c = a*b
output a, “X”,b, “=” c
end loop
1. b++ should be after output
2. there should be semicolons “;”
3. there should be plus “+” sign instead of commas
4. it should be "loop for" not "while"