Question # 1

Which famous inventor ranks second in the number of patents registered?

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Thomas alva edison

James newton

Leonardo da vinci

Jacques Cousteau

The H.C.F. and L.C.M. of two numbers are 50 and 250, respectively. If the first number is divided by 2, the quotient is 50. The second number is:

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50

100

125

250

Resolve into factors: 4x² + 12xy + 9y² - 8x -12y

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(3x + 2y)(4x + 2y - 3)

(2x + 3y)(2x + 3y - 4)

(2x - 3y)(2x + 3y + 4)

None of these

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135^o

125^o

115^o

110^o

Which of the following is a non essential amino acid ?

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Almine

Methylamine

Tyrosine

None of these

The name of disease called Lock-jaw is?

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Arthritis

Hypetropia

tetanus

None of these

Many of the convenience foods on the market today, like dry cereals, have less nutrients than natural foods, which were dominant a decade or two ago. Many nutritionists claim that dry cereal gives less nourishment than natural foods like eggs or bacon. Opponents of the nutritionists views state that examination of grade-school students show less nutritional deficiency than in their parents time.

Which of the following, if true, would tend to strengthen the opponents view ?

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Grade-school children reported eating no breakfast at all.

Fewer convenience foods were available to the parents.

Adults claim to eat convenience foods as well as natural foods.

Convenience foods can be digested just as quickly as natural foods.

Consumers are not likely to sacrifice convenience for nutrition.

In the human body, platelets, promote blood clotting by clumping together. Aspirin has been found to prevent clotting by making platelets less sticky. Research has now shown that heart attacks and strokes caused by blood clots could be avoided by taking one aspirin a day. Statistics show that the incidence of second heart attacks

Unfortunately, the drug has several unpleasant side effects, including nausea, gastric bleeding, and, in severe cases, shock. In children, it has been linked to Reye Syndrome, a rare, but occasionally fatal, childhood illness.

One balance, however, for men aged 40 and over, an aspirin a day may present an excellent prophylactic measure for a disease that affects 1.5 million Americans yearly and claims the lives of about 540,000.

Which of the following conclusions can most properly be drawn from the information above ?

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All people should take an aspirin a day to prevent heart attacks.

Painkillers prevent heart attacks.

Smokers can safely continue smoking, provided that they take at least one aspirin a day.

The majority of people suffering second subsequent cardiac arrests could have been saved by taking an aspirin a day.

Aspirin can be used to reduced mortality rates who have already suffered heart attacks.

The marks obtained by 10 students is Science are 30,41,40,41,30,28, 41,40. the model mark is

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40

30

41

35

Which ricks are formed by the alteration of pre-existing rocks by great heat or pressure?

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Igneous rocks

Sedimentary rocks

Metamorphic rocks

Acid rocks

If the measures of the angles of a triangle are in the ratio of 1:2:3, and if the length of the smallest side of the triangle is 10, what is the length of the longest side ?

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10√2

10√3

15

20

The process by which small amount of impurities is added into a semiconductor is called:

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Addition

Condition

Doping

Insulating

Copper can be converted into gold by:

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Artificial radioactivity

Heating

Electroplating

Chemical reaction

The blue color of sky is due to

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Rayleigh scattering

Mile scattering

Sky saturation

None of these

The densities of three liquids are D, 2D, 3D. What will be the density of the resulting mixture if equal volumes of the three liquid are mixed?

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1.5D

2D

3D

6D

Carbohydrate content in potato is:

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12%

22%

32%

42%

A concave refracting surface is one with a center of curvature:

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to the left of the surface

to the right of the surface

on the side of the incident light

on the incident of the refracted light

on the side with the higher index of the refraction

Solve: 7x+11y=1, 8x+13y=2.

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x=-5, y=3

x=-7, y=5

x=-3, y=2

None of these

Unavailable energy in a system is called

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Minimum energy

Entropy

Thermal energy

None of these

If the outer radius of a metal pipe is 2.84 in and the inner radius is 1.94 in, the thickness of the metal is

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.75 in

.80 in

.90 in

.95 in

If 135 × 604 = 43056 and 27 × 698 = 82976, then 32 × 864 = ?

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43682

43628

82643

82634

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