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Recently added practice questions

2851. Two wires of the same radius & material having length in the ratio of 1 : 2 are stretched by the same force. The strain produced in the two wires will be in the ratio of__________________?
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A. 1:04

B. 1 : 1

C. 2:01

D. 1:02

2852. Two vessels P and Q contain 62.5% and 87.5% of alcohol respectively. If 2 litres from vessel P is mixed with 4 litres from vessel Q, the ratio of alcohol and water in the resulting mixture is_______?
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A. 16:05

B. 14:05

C. 19 : 5

D. None of these

E. 16:07

2853. Two vectors are A = 3i^+2j^ -k^& B = 3i^-2j^ +k^ , then_____________?
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A. B is anti-parallel to A

B. B is a negative vector of A

C. B is perpendicular to A

D. B has a negative magnitude

2854. Two trains 120 miles apart travel towards each other. The 1st train travels at 70 mph while the 2nd at 50 mph. A bird starts flying from the location of the faster train towards the other train at 85 mph and when it reaches the slower train it turns back and flies in the other direction at the same speed. When it reaches the faster train it again turns around and repeats the same procedure again and again. When the train collide, how far will the bird have flown?
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A. 70 miles

B. 50 miles

C. 85 miles

D. 120 miles

2855. Two trains 120 miles apart travel towards each other. The 1st train travels at 70 mph while the 2nd at 50 mph. A bird starts flying from the location of the faster train towards the other train at 85 mph and when it reaches the slower train it turns back and flies in the other direction at the same speed. When it reaches the faster train it again turns around and repeats the same procedure again and again. When the train collide, how far will the bird have flown?
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A. 50 miles

B. 70 miles

C. 120 miles

D. 85 miles
2856. Two teenage girls from Ghanche district of _____ have scaled the Teide peak, the highest mountain in Spain.
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A. Baluchistan

B. Sindh

C. Gilgit-Baltistan

D. KPK

2857. Two plates of a parallel plate capacitor after being charged from a constant voltage source are separated apart by means of insulated handles, then the____________?
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A. voltage across the plates decreases

B. charge on the capacitor decreases

C. Voltage across the plates increases

D. charge on the capacitor increases

2858. Two pipes P and Q can fill a cistern in 12 min. and 15 min. respectively but a third pipe R can empty the full tank in 6 min. P and Q are kept open for 5 min. in the beginning and then R is also opened. In what time is the cistern emptied ?
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A. 35 min

B. 40 min

C. 45 min

D. 30 min

2859. Two pipes A and B can separately fill a tank in 2 minutes and 15 minutes respectively. Both the pipes are opened together but 4 minutes after the start the pipe A is turned off. How much time will it take to fill the tank?
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A. 12 min

B. 9 min

C. 10 min

D. 11 min

2860. Two pipes A and B can fill a cistern in 12 and 15 minutes respectively. Both are opened together but after 3 minutes A is turned off. After how much more time will the cistern be filled?
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A. 3 1/4 min

B. 8 1/4 min

C. 9 1/4 min

D. 5 1/4 min

2861. Two parallel wires carrying currents in the opposite directions____________________?
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A. have no effect upon each other

B. repel each other

C. they cancel out their individual magnetic fields

D. attract each other

2862. Two parallel beams of positrons moving in the same direction will________?
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A. not interact with each other

B. attract each other

C. be deflected normal to the plane containing the two beams.

D. repel each other
2863. Two Pakistani students gain highest mark for _________ exam held in China?
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A. None of these

B. oxford Exam

C. Cambridge Exam

D. Trinity Exam

2864. Two objects moving with uniform speeds are 5 m apart after 1 second when they move towards each other and are 1 m apart when they move in the same direction. The speeds of the objects are____________________?
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A. 3 m/sec and 2 m/sec

B. 3 m/sec and 3 m/sec

C. 4 m/sec and 6 m/sec

D. 2 m/sec and 2 m/sec

2865. Two numbers are 30% and 37% are less than a third number .How much percent is the second number less than the first?
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A. 10%

B. 12%

C. 15%

D. 5%

2866. Two number is first increased by 10 % and then reduced by 10 % the number:__________?
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A. 3:05

B. 2:05

C. 4:5

D. 6:07

2867. Two natural numbers whose sum is 72 cannot be in the ratio:
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A. 1:02

B. 3:4

C. 3:05

D. 1:03

2868. Two much Mg may create deficiency for_____________________?
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A. K

B. Ca

C. N

D. P

2869. Two major types of muscle fibres are found in humans_____________?
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A. White and yellow

B. White and red

C. White and gray

D. white and brown

2870. Two long parallel conductors carry 100 A. If the conductors are separated by 20 mm, the force per meter of length of each conductor will be_____________?
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A. 1 N

B. 10 N

C. 0.1 N

D. 100 N

2871. Two holes in the disc of energy meter are drilled at the opposite sides of the spindle to_____________?
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A. eliminate creeping at no load

B. improve its ventilation

C. increase its deflecting torque

D. increase its braking torque

2872. Two generators are running in parallel. One of the generators may run as motor for which of the following reasons ?
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A. That generator takes large share of loads

B. The field of that generator is weakened

C. The speed of that generator is increased

D. The direction of that generator is reversed

2873. Two cylinders are of the same height. Their radii are in the ratio 1: 3. If the volume of the first cylinder is 40 cc. Find the volume of the second cylinder?
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A. 300 cc

B. 360 cc

C. 36 cc

D. 60 cc

2874. Two countries can gain from foreign trade if ?
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A. Cost ratios are different

B. Price ratios are different

C. Tariff rates are different

D. A and C of above
2875. Two circular discs of same weight and thickness are made from metals having different densities. Which disc will have the larger rotational inertia about its central axis ?
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A. disc with larger density

B. disc with smaller density

C. both discs will have same rotational inertia

D. none of the above

2876. Two attributes are associated if expected frequency is ____________________?
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A. Greater than observed

B. Less than observed

C. Equal to observed

D. None of these

2877. Twenty women can do a work in sixteen days. Sixteen men can complete the same work in fifteen days. What is the ratio between the capacity of a man and a woman ?
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A. 3:04

B. Data inadequate

C. 5:03

D. 4 : 3
2878. Twentieth Amendment of Constitution of 1973 amended ___________ and ___________ schedule?
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A. 4th and 5th

B. None of above

C. 2nd and 3rd

D. 6th and 7th

2879. Twelve men can do a work in twenty days while twenty women can finish the same work in sixteen days. Find the ratio between the capacity of a man and a woman.
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A. 4:3

B. 5:04

C. 5:03

D. 3:04

2880. Twelve children take sixteen days to complete a work which can be completed by 8 adults in 12 days. After working for 3 days, sixteen adults left and six adults and four children joined them. How many days will they take to complete the remaining work ?
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A. 4 days

B. 3 days

C. 6 days

D. 8 days

2881. Turkish President Recep Tayyip Erdogan launched the welding of the __________ warship to be constructed for Pakistan Navy under the Milgem project:
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A. None of these

B. Second

C. First

D. Third
2882. Turbidity is measured on_______________?
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A. standard cobalt scale

B. standard platinum scale

C. standard silica scale

D. platinum cobalt scale

2883. Tunnel erosion is the form of:__________?
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A. Gully Erosion

B. Rainsplash erosion

C. Rill erosion

D. Sheet erosion

2884. Tungsten in high speed steel provides________________?
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A. sharp cutting edge

B. cold hardness

C. wear resistance

D. toughness

E. hot hardness
2885. Tun Dr. Mahathir bin Mohamad is a Malaysian Prime Minister, he belong to which of the following political party?
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A. Peoples JusticeParty

B. None of These

C. Malaysian United Indigenous Party

D. Democratic ActionParty

2886. Tumbling is the process of improving the ________________ of the materials/parts ?
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A. Surface finish

B. Fatigue limit

C. Surface cleanliness

D. Creep limit

2887. Tumbling is the process of improving the ________________ of the materials/parts ?
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A. Surface cleanliness

B. Fatigue limit

C. Creep limit

D. Surface finish

2888. Tugela water fall is present in___________?
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A. USA

B. South Africa

C. Venezuela

D. Canada

2889. Tubuloglomerular feedback occurs in______________?
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A. ADH secretion in collecting duct

B. Macula densa

C. Constant solute load on distal tubule

D. Balance between ascending and descending loop of henle

2890. Tubes of multiple effect evaporator used for concentration of sugar cane juice are made of __________________?
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A. Stainless steel

B. Nickel

C. Brass

D. Copper
2891. Tubes are held between top and bottom tube sheets in Calandria type evaporator by keeping_________________?
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A. Both the tube sheets fixed

B. Both the tube sheets floating

C. The top tube sheet floating and bottom tube sheet fixed

D. The top tube sheet fixed and the bottom tube-sheet floating

2892. Tubes are fixed to the tube sheet (a thick circular metallic plate) by the method of tube rolling and brazing (non-removable) or ferrule connection (removable). Thickness of the tube, sheet is normally ____________ the outside diameter of the tube but in no case it should be less than 22 mm (7/8?)?
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A. Three fourth

B. Equal to

C. Half

D. 1.5 times

2893. Tuberculosis is a _________ infection?
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A. Bacterial

B. Fungal

C. Parasitic

D. Viral

2894. Tryptophan load test helps in the evaluation of deficiency of the vitamin______________?
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A. Niacinamide

B. Folic acid

C. Cyano cobolamine

D. Pyridoxine
2895. True vapour pressure of a petroleum fraction ________________ Reid vapour pressure?
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A. Is less than

B. Is same as

C. Is more than

D. May be either more or less than
2896. True increasing order of acidity of the oxides of Mn is_________________?
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A. MnO2 > Mn2O7 > MnO

B. Mn2O7 > MnO2 > MnO

C. MnO2 > MnO > Mn2O7

D. MnO < MnO2 < Mn2O7

2897. True about myoepithelial cell______________?
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A. All of the above

B. The cell expel secretions by contraction

C. Also known as basket cell

D. Structure is similar to smooth muscle and contains actin & myosin

2898. True about denaturation of protein is all except______________?
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A. Disruption of secondary structure occurs

B. Unfolding occurs

C. Biological activity is retained

D. Sequence of amino acids remain the same

2899. Tropism mostly refers to as_______?
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A. Behavioral pattern of human

B. Bird migration

C. Directional growth of a plant

D. Longevity of animal species

2900. Trisodium phosphate in alginate acts are_______________?
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A. Retarder

B. Reactor

C. Accelerator

D. Plasticizer

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