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HSSC TGT Science Date 29/4/2023 Evening Shift
📆 November 23, 2024
Total Questions: 100
91.
If E =100sin (100t) Volt and I = 100sin(100t + pi / 3) are the instantaneous values of voltage and current, then the rms values of voltage and current are respectively:
(a) 70.7V and 70.7mA
(b) 141.4V and 141.4A
(c) 70.7V and 70.7A
(d) 141.4V and 141.4mA
(e) Unattempted
Correct Answer:
(a) 70.7V and 70.7mA
92.
Which hormone is secreted by the ovary in the later phase of pregnancy?
(a) Thyroxin
(b) Relaxin
(c) Prolactin
(d) Adrenaline
(e) Unattempted
Correct Answer:
(b) Relaxin
93.
At constant temperature, the pressure of a fixed amount of gas varies inversely with its volume. This is known as:
(a) Charles' law
(b) Avogadro's law
(c) Gay-Lussac's law
(d) Boyle's law
(e) Unattempted
Correct Answer:
(d) Boyle's law
94.
Which theory attempts to explain to us the origin of the universe?
(a) Speciation theory
(b) Natural selection
(c) Big Bang theory
(d) Mass theory
(e) Unattempted
Correct Answer:
(c) Big Bang theory
95.
Which of the following radiations has the least wavelength?
(a) γ-rays
(b) X-rays
(c) α-rays
(d) β-rays
(e) Unattempted
Correct Answer:
(a) γ-rays
96.
Fehling solution A is:
(a) Aqueous copper sulphate
(b) Alkaline potassium chloride
(c) Ammoniacal silver nitrate
(d) Rochelle salt
(e) Unattempted
Correct Answer:
(a) Aqueous copper sulphate
97.
Restriction enzyme belongs to a larger class of enzymes called:
(a) Lactases
(b) Amylases
(c) Nucleases
(d) None of the above
(e) Unattempted
Correct Answer:
(c) Nucleases
98.
Discontinuously synthesized fragments are later joined by the enzyme:
(a) Amylase
(b) DNA ligase
(c) Isomerase
(d) Lipase
(e) Unattempted
Correct Answer:
(b) DNA ligase
99.
____ is called washing soda.
(a) Na₂CO₃.10H₂O
(b) Na₂CO₃.H₂O
(c) Na₂CO₃.4H₂O
(d) Na₂CO₃.5H₂O
(e) Unattempted
Correct Answer:
(a) Na₂CO₃.10H₂O
100.
The Microsporangia develop further and becomes:
(a) Tapatum
(b) Endodermis
(c) Pollen sac
(d) Receptacle
(e) Unattempted
Correct Answer:
(c) Pollen sac
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