Category Archives: PPSC Solved Past Papers MCQs

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The energy value of fats and oils is ______ times more than carbohydrates and proteins ?

A. 4.25
B. 2.25
C. 3.25
D. 5.25

The vitamin that control the browning in fruits by the help enzymes is ?

A. Vitamin K
B. Vitamin C
C. Vitamin B
D. Vitamin D

_________ makes up 14 to 17 percent of skeleton.

A. Iron
B. Sodium
C. Magnesium
D. Phosphorous

According to science, the Earth is ______ years old ?

A. 10 billion
B. 4.5 million
C. 4.5 billion
D. 450 million

Cirrhosis is a disease that affects which organ among the following?

A. Liver
B. Kidney
C. Pancreas
D. Small Intestine

Stimulus intensity is detected in brain by ?

A. The number of actor potentials per second
B. The threshold potential
C. The amplitude of the action potential
D. The number of synapses crossed

In the plant cells which reactions occurs in the stroma of the choloroplasts ?

A. Calvin cycle
B. Fermantation
C. Krebs cycle
D. Decarboxylation

Approximately what fraction of the human genome encodes protiens?

A. 2%
B. 20%
C. 50%
D. 90%

Three Gorges Dam is located in ?

A. India
B. China
C. USA
D. Canada

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Timbuktu is the famous city of ?

A. Mali
B. Egypt
C. Spain
D. Iraq