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Mock Exam B (1): BMAT Section 2

27 Questions, 30 Minutes

​Question 1
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Which of the following statements describes the characteristics of nerves and hormones correctly?

A. Nerves are fast, short term, precise, and initiate electrical signals, while hormones are slow, long term, have general target, and initiate chemical signals.
B. Nerves are fast, long term, precise, and initiate chemical signals, while hormones are slow, short term, have general target, and initiate electrical signals.
C. Nerves are fast, short term, have general target, and initiate electrical signals, while hormones are slow, short term, have precise target, and initiate chemical signals.
D. Nerves are slow, short term, have precise target, and initiate electrical signals, while hormones are fast, long term, have general target, and initiate chemical signals. 
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Question 2 and 3
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2) This garden decoration consists of a full cylinder (including the 2 bases) and a circular disc. The circular disc has a radius of r, each of the cylinders bases has a radius of r/3 , and the cylinder has height of 4r. What is the total area of this decoration?
3) If one tin of paint coats an area of  2r² once, how many tins of paint will you need to buy to coat the whole decoration twice?

A. 6.1
B. 7
C. 12.2
D. 13
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Question 4
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Silver iodide reacts with iron (III) carbonate to form iron (III) iodide and silver carbonate.
What are the values of a, b, c and d?

A. 1, 1, 1, 1
B. 6, 1, 2, 3
C. 2, 1, 2, 1
D. 6, 1, 3, 2  


Question 5
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The graph of xy = 3 does not exist for which value of x?
 
A. x = 3
B. x = y
C. x = 0
D. The graph exists for all values of x
 


Question 6
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An object, initially at rest, is acted upon by a constant force. Which pair of graphs shows the variation of speed and kinetic energy of the object with time?

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Question 7
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Which of the following statements describe mitosis and meiosis the best?

  1. Both of mitosis and meiosis have interphase.
  2. Daughter cells produced through both mitosis and meiosis are genetically identical to the parent cell.
  3. Both meiosis and mitosis take place in asexual reproduction
  4. Comparing the number of cells produced, 4 rounds of mitosis produce the same number of cells as two events of meiosis.

A. 1 and 3
B. 2 and 3
C. 1 and 4
D. 3 and 4
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Question 8
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Question 9
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An ore of iron contains 68% FeS₂. Calculate the mass of ore required to produce 100 kg of iron.  
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Assume the extraction efficiency is 100%. (Ar: Fe=56; S=32)

A. 68 kg
B. 147 kg
C. 214 kg
D. 315 kg


Question 10
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Which of the following statements describe the number of cycles that pass a point per second?

A. The speed of electromagnetic waves but not sound wave.
B. The wavelength of any type of waves, and it is measured in Hertz.
C. The frequency of a wave, and it is the reciprocal of period.
D. The amplitude of a wave, and it does not have units.
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Question 11
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The area of a rectangular patio is 16 squared units. One length is x cm long, and the other is 3x + 8 cm long. Calculate the value of x.
 
A. -4
B. -4, 4 / 3
C. 4 / 3
D. 4
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Question 12
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The following chemicals are mixed together. In which of the mixtures will a displacement reaction occur?
A. 2 only
B. 2 and 3 only
C. 3 and 4 only
D. 1 and 2 only
E. 1, 2 and 4 only
F. 2, 3 and 4 only
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Question 13
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Which of the following statements is/are correct?
 
  1. Mitosis is cell division for gamete formation, with a haploid number of chromosomes that are genetically different to the parent cells
  2. Mitosis is the cell division for repair and growth, with a diploid number of chromosomes that are identical to the parent cells
  3. Meiosis is the cell division for gamete formation, with a haploid number of chromosomes that are genetically different to the parent cells
  4. Meiosis produces 2 daughter cells
  5. Mitosis produces 2 daughter cells

A. 1,2,3
B. 3,4,5
C. 1,5
D. 2,3,5 

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Question 14
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The area of a rectangular patio is found to be 12x² - 4x - 8 , where x is an arbitrary unit. Which of the following are possible dimensions of the patio?
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A. (3x-2)(4x-4)
B. (4x+2)(3x-4)
C. (3x+2)(4x-4)
D. (6x-2)(2x-4)

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Question 15
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Which of the following describes the ultrasound range ?

A. They are traverse waves with a frequency of 30 Hz
B. They are sound waves with a frequency of 300 Hz
C. They have a frequency of 3000 Hz, and humans can hear it.
D. They are longitudinal waves with a frequency of 30,000 Hz
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Question 16
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How many moles of oxygen will be produced if 6 moles of potassium permanganate are decomposed?

A. 6
B. 2
C. 4
D. 3
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Question 17
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Question 18
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A compound of nitrogen and oxygen contains 36.4g of nitrogen and 20.8g of oxygen. Which of the following would be its formula? (Ar: N = 14, O = 16)

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Question 19
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The area of a rectangular patio is found to be 6x²-13x-63 , where x is an arbitrary unit. Which of the following are possible dimensions of the patio?

A. (2x+9)(3x-7)
B. (2x-9)(3x+7)
C. (3x-9)(2x+7)
D. (3x+9)(2x-7)​​​

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Question 20
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The graph below shows the variation of acceleration with time for an object. What physical quantity can be deduced from this graph and how is this calculated ?

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Question 21
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1.82 g of butan-1-ol is reacted with excess hydrogen bromide to produce 1.50 g of 1-bromobutane according to the following equation:
What is the percentage yield of the reaction?
(Ar : H=1; C = 12; O = 16; Br = 80)
 
A. 24.6%
B. 44.5%
C. 72.5%
D. 82.4%
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Question 22
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A linear sequence can be described in terms of n by the following expression:
                                                 9(n+7)+12
What would be the 1th, 3th and 1200th term of this sequence respectively

A. 84, 102, 10875
B. 84, 102, 10868
C. 84, 98, 1207
D. 28, 102, 1075

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Question 23
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Which of the following statements about stem cells are correct?
 
  1. Adult stem cells are more able to differentiate than embryonic stem cells
  2. Stem cells can be found in the bone marrow
  3. Stem cells found in embryos are able to form any type of cell
 
A. 1,2
B. 1,3
C. 2,3
D. All are correct
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Question 24
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Nitrogen monoxide can be prepared from copper and dilute nitric acid.
​Choose the correct state symbols for the above reaction from the following table.

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Question 25 and 26
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The diagram shows part of a transformer.
 
The transformer is to be used as a step-down transformer.
 
In the table below select the options which show the correct use of the transformer.
  1. A D.C. supply has to be connected across coil X.
  2. An A.C. supply has to be connected across coil X.
  3. Number of turns in coil Y > number of turns in coil X.
  4. Number of turns in coil Y < number of turns in coil X.
  5. The microammeter will show a steady deflection.
  6. The microammeter will show a changing deflection.
 
A. 2 and 4
B. 2, 4 and 6
C. 3, 4 and 6
D. 3 and 6

The transformer is described as 100% efficient. What does this mean?

A. The current in Y must equal the current in X
B. The voltage across Y must equal the voltage across X
C. The resistance of Y must equal the resistance of X
D. There is no magnetic field passing through the soft-iron core
E. The power in Y must equal the power in X.

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Question 27
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The area of a rectangular patio is 9 squared units. One length is x cm long and the other is 2x + 3 cm long. Calculate the value of x.
 
A. 3 / 2
B. -3
C. 3
D. -3, 3 / 2
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