Area, Population and Official Languages MCQs

281

Nitrogen is present in air as a major constituent. It is an inactive gas in comparison with oxygen which is the next major constituent of air Nonreactive nature of nitrogen is due to the reason;

A. There is one lone pair of electron on each nitrogen atom in its molecule B. There is triple covalent bond in nitrogen molecule which is very strong and molecule is polar C. Nitrogen have three unpaired electrons in its 2p orbital which is compareatively stable electronic configuration D. There is triple covalent bond in nitrogen molecule which is very strong and molecule is non polar

282

Xerophytes have small thick leaves to:

A. Limit water loss by increasing the surface area B. Help them float on water C. Help them survive in salty environment D. Limit water loss by reducing the surface area

283

Percentage uncertainty in length and width of a rectangle is 2% and 3%. The total uncertainty in area of that rectangle is:

A. 1% B. 1.5% C. 5% D. 6%

284

Magnetic flux is maximum when angle between magnetic field and vector area is:

A. 0° B. 45° C. 90° D. 180°

285

The resistance of a conductor does not depend on which of the following?

A. area B. resistivity C. length D. mass

286

Which surface has greater magnetic flux in same magnetic field, each has an area 1 m².

A. Circular B. Rectangular C. Triangular D. All have same flux

287

ABO blood group is controlled by more than two alleles in a population. This shows that ABO blood group is an example of:

A. Polygenic Inheritance B. Multiple Alleles C. Operons D. Allelic interaction

288

The movement of water to lower solute concentration area through a semipermeable membrane is?

A. Osmotic Potential B. Pressure potential C. Soil potential D. Solute potential

289

The following formula can be used to determine the resistance of a length of conductor. R = pl/A . In the formula, the symbol p stands for the:

A. Cross-sectional area of the conductor in m² B. Product of the length of the conductor in meters C. Resistivity of the material in units of ohm-meters D. Resistance of the conductor in units of ohms per meter

290

The resistance of the wire varies inversely as:

A. Area of cross section B. Length C. Temperature D. Resistivity

291

A wire of uniform area of cross-section 'A', length 'L', and resistance 'R' is cut into two equal parts. What will happen to the resistivity of each part?

A. It will be one fourth B. It will be doubled C. It will be halved D. It will remain the same

292

If 0.5 T field is applied over an area of 2-meter square which lies at an angle of 60 degree with the field, then the resulting flux will be:

A. 0.5 T B. 0.5 Wb C. 0.25 Wb D. 0.25 T

293

The formula calculating the frequency of genotypes and alleles in a population gene pool is known as:

A. Hardy-Weinberg Equation B. Lamarck Equation C. James Hutton Equation D. Darwin Equation

294

In velocity time graph the area under graph is equal to the:

A. Speed of an object B. Velocity of an object C. Distance covered by object D. Acceleration of an object

295

If one side of the square is 35m, then the area of the square is ?

A. 1205 m2 B. 1225 m2 C. 1252 m2 D. 965 m2

296

Pakistan Estimated Population in 2020 is ?

A. 250 Million B. 150 Million C. 200 Million D. 220 Million

297

The largest province by area in Pakistan is ______.

A. Sindh B. Baluchistan C. Punjab D. Khyber Pakhtunkhwa

298

Which of the following is the official currency of Japan?

A. Japanese Dollar B. Japanese Ringgit C. Japanese Lari D. Japanese Yen

299

There is 10% increase in the length of a rectangle and 10% increase in the width of rectangle. What is the percentage change in the area of rectangle?

A. 23% B. 21% C. 10% D. 20%

300

Largest country by area?

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

Area, Population and Official Languages MCQs with Answers & Explanations (Page 15)

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