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Home » General Knowledge » Aptitude Test - 66
Hassan
1.A frame of reference has four coordinates, x, y, z, and t is referred to as the
A. Inertial frame of reference
B. Non-inertial frame of reference
C. Space-time reference
D. Inertial frame of reference
2.A man, who weighs 60 kg on earth, weighs 61 kg on a rocket, as measured by an observer on earth. What is the speed of the rocket?
A. 2.5 X 108 m/s
B. 2.5 X 107 m/s
C. 5.5 X 107 m/s
D. 2.5 X 108 m/s
3.The momentum of a photon having energy 1.00 X 10-17 J is?
A. 2.33 X 10-26 kg m/s
B. 3.33 X 10-26 kg m/s
C. 4.33 X 10-26 kg m/s
D. 2.33 X 10-26 kg m/s
4.A rod of length 5 m is moving at a speed of 0.6 c. To an observer sitting perpendicular to the direction of motion, the length appears to be?
A. 5 m
B. 4 m
C. 3 m
D. 5 m
5. If an object reaches the speed of light, it’s length changes to?
A. Infinite
B. Double of the value
C. Half of the value
D. Infinite
6.A 20-year-old person goes at a high speed in a rocket on his birthday. when he comes back to earth after 1 earth year, he would be?
A. 1 year older
B. 2 years older
C. A few months older
D. 1 year older
7.The length of a rod seems shorter to an observer when it moves in a specific direction. What change would he observe when the direction of rod changes by 180o?
A. The rod becomes even smaller
B. The length of the rod increases
C. The length of the rod remains the same
D. The rod becomes even smaller
8.An object of length 1 m is moving at speed 0.5c. To an observer at rest relative to the object, the length of the object seems to be?
A. 0.86 m
B. 0.5 m
C. 1 m
D. 0.86 m
9.How fast does a rocket have to move relative to an observer for its length to be contracted to 95% of its original length?
A. 0.5 c
B. 0.4 c
C. 0.3 c
D. 0.5 c
10.A rod of length 1m moves with a speed of 0.5 c. How much length contraction takes place?
A. 50 %
B. 14 %
C. 10 %
D. 50 %
11.A particle with a lifetime of 2 X 10-6 s moves through the laboratory with a speed of 0.9 c. It’s lifetime, as measured by an observer in the laboratory, is?
A. 2 X 10-6 s
B. 3.2 X 10-6 s
C. 4.6 X 10-6 s
D. 2 X 10-6 s
12.What is the fundamental unit of collagen?
A. Tropocollagen
B. Hydroxylysine
C. Hydroxyproline
D. Tropocollagen
13.Name the vitamins which cause scurvy?
A. Vitamin B
B. Vitamin B3
C. Vitamin C
D. Vitamin B
14.Name the protein which is responsible for extensibility and elasticity of connective tissues?
A. Actin
B. Collagen
C. Keratin
D. Actin
15.Which of these type of curve shows the oxygen binding capacity of hemoglobin?
A. Hyperbolic curve
B. Sigmoidal curve
C. Exponential curve
D. Hyperbolic curve
16.What is the function of myoglobin?
A. Oxygen storage
B. Oxygen carrier
C. Antioxidant
D. Oxygen storage
17.What is the name of protein which is found in nail, hair, and horns?
A. Myoglobin
B. Hemoglobin
C. Keratin
D. Myoglobin
18.In which iron(Fe) state myoglobin binds to the oxygen?
A. Fe2+
B. Fe3+
C. Fe
D. Fe2+
19.What is the shape of the oxygen dissociation curve of myoglobin?
A. Linear
B. Hyperbola
C. Sigmoid
D. Linear
20.Which of these are the possible cause of sickle cell anemia with respect to hemoglobin?
A. Defect in β-chain of hemoglobin
B. Defect in α-chain of hemoglobin
C. One copy of an abnormal β-globin gene
D. Defect in β-chain of hemoglobin
21.Protein folding is a process in which a polypeptide folds in to?
A. 3-D structure
B. 2-D structure
C. Linear form
D. 3-D structure
22.Which of them contains all the information required to fold the polypeptide chain in its 3-D structure?
A. DNA sequences
B. RNA
C. Histone protein
D. DNA sequences
23.Which sentence is INCORRECT regarding molten globule state of protein?
A. Hydrophobic interaction among non-polar residues
B. The collapsed state
C. It is less compact
D. Hydrophobic interaction among non-polar residues
24.Which of the following name is given to molecular chaperones?
A. Allosteric protein
B. Heat shock protein
C. Denaturation protein
D. Allosteric protein
25.Which of these heat shock proteins prevent protein misfolding and maintain polypeptide chain in the unfolded state?
A. Hsp60
B. Hsp28
C. Hsp70
D. Hsp60
26.Among all the heat shock proteins which one is known as chaperonins?
A. Hsp70
B. Hsp32
C. Hsp60
D. Hsp70
27.Which one of the following reagent is also known a Sanger’s reagent?
A. 1-fluoro-2,4-dinitrobenzene (FDNB)
B. Phenylisothiocyanate
C. Cyanogen bromide
D. 1-fluoro-2,4-dinitrobenzene (FDNB)
28.Proteolytic enzyme trypsin cleaves protein at which of these specific sites?
A. Carboxyl side of Alanine, Glycine
B. Carboxyl side of Lysin or Arginine
C. Carboxyl side of aromatic amino acid
D. Carboxyl side of Alanine, Glycine
29.Mark the correct statement which depicts the correct statement of protein assay?
A. To determine the amount of protein
B. To characterize the function of the protein
C. To determine the structure of the protein
D. To determine the amount of protein
30.In a living organism, strong interactions between molecules are formed by a certain type of bond. Name that?
A. Hydrogen bonding
B. Covalent bond
C. Electrostatic interactions
D. Hydrogen bonding
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