51) What is added in lead pencils?
(A) Graphite
(B) Silicon
(C) Tungsten
(D) Mercury
52) How does sunlight enter the rooms?
(A) Vertically
(B) By Refraction
(C) Horizontally
(D) By irregular Reflection
53) How many colors are visible in the sunlight spectrum?
(A) 5
(B) 6
(C) 7
(D) 8
54) Which substance is liquid at room temperature?
(A) Graphite
(B) Mercury
(C) Silicon
(D) Tungsten
55) Which of these is negatively charged?
(A) Neutrino
(B) Neutrons
(C) Protons
(D) Electrons
56) What happens to volume of water when it freezes
(A) Decreases
(B) Increases by 1/10
(C) Flows Rapidly
(D) Turns to Ice
57) Which party has the higest no.of seats in senate after 2012 election?
(A) PMLN
(B) PPP
(C) MQM
(D) JUI
58) Amir Khan is?
(A) British National
(B) Pakistani
(C) Indian
(D) Punjabi
59) _______ cubic millimeters constitute 1 cubic centimeter?
(A) 1000
(B) 2000
(C) 3000
(D) 4000
60) In the exam 45% students failed and 550 students were successful. The total number of students who appeared in the exam were:
(A) 1000
(B) 900
(C) 1500
(D) 800