2101. The storage life of grape fruit at 50F with R.H of 90% is _____________________?
comments icon0

A. 4-8 weeks

B. 2-3 weeks

C. 4-6 weeks

D. 10 weeks

2102. Elements essentially required for growth of all plants species are___________________?
comments icon0
A. 16

B. 32

C. 3

D. 15

2103. Which one of the following is best flour improver ______________________?
comments icon0

A. ClO2

B. All the above

C. Cl2

D. Benzoyl peroxide
2104. Addition of sodium hexametaphosphate in soil for determination of soil texture causes__________________?
comments icon0

A. Agregation of soil particles

B. Cementing of soil particles

C. All the above

D. Dispersion of soil particles
2105. To prevent the growth of molds in bread ind other backed food which preservative is used___________________?
comments icon0

A. Sodium acetate

B. Calcium acetate

C. All the above

D. Potassium acetate

2106. The problem of soil crosion Thal and Cholistan is predominantly due to___________________?
comments icon0

A. All the above

B. Wind

C. Water

D. Air

2107. Many reactions similar to oxidative rancidity during irradiation been observed in _____________________?
comments icon0

A. non of these

B. Lipids

C. Water

D. Carbohydrates

2108. pF unit is used for the measurement of_____________________?
comments icon0
A. Negative soil water potential

B. Hydraulic potential

C. All the above

D. Hydraulic conductivity

2109. The mechanism of food intake regulation is known as ____________________?
comments icon0

A. Lipostatic regulation

B. Glucostatic regulation

C. All the above

D. Aminostatic regulation

2110. The moisture content below which a cohesive soil does stick to metal tools is known as______________________?
comments icon0

A. Alter berg limit

B. Sticky limit

C. Liquid limit

D. Plastic limit

2111. Weathering of gabbros gives_____________________?
comments icon0
A. Clay and iron oxide

B. Sand and clay

C. Clay and Mg oxides

D. Sand and iron oxide

2112. Which rock contain potash feldspar ?
comments icon0
A. Syeruite

B. Gabbro

C. All the above

D. Norile

2113. In soft drinks and dietetic forms of food which sweetening agent is widely used _____________________?
comments icon0

A. All the above

B. Cyclamates

C. Calcium salt

D. Glycyrrhizin acid

2114. In preparation of fruit juices, pickles and carbonated beverages the preservative used is _____________________?
comments icon0

A. Proconic acid

B. Benzonic acid

C. Parabens

D. All the above

2115. The plant trigly cerides are rich in_________________?
comments icon0
A. Unsaturated fatty acids

B. Saturated fatty acids

C. Steroids

D. None of the above

2116. In dairy industry, the most often used bacteria to convert milk sugar to lactic acid are___________________?
comments icon0

A. Streptococcus

B. Lactobacillus

C. Acetobacter

D. Both a & b
2117. Equation of Ozone is________________________?
comments icon0

A. O2 O

B. O2 + O =O3

C. O3 + O

D. None of the above

2118. The symbol of Na stands for___________________?
comments icon0

A. Nickle

B. None of these

C. Neon

D. Natrium

2119. Slipperiness is due to__________________?
comments icon0

A. None of the above

B. Covalent bond

C. Wire bond

D. Vander walls forces
2120. Mechanisms of material uptake by plants is by____________________?
comments icon0
A. Mass flow

B. Osmosis

C. Diffusion

D. Root interception

2121. Father of agricultural chemistry is___________________?
comments icon0

A. J. jones

B. Neuron

C. Vonliebig

D. Neil Brady

2122. Mean annual precipitation for tundra region is ____________________?
comments icon0

A. None of the above

B. 70-80 cm

C. 0-50 cm

D. 150-70 cm

2123. The inner shell of earth consists of_____________________?
comments icon0
A. Silicate of Fe & Mg

B. Mg

C. Fe

D. Silicate

2124. The available form of calcium to plant is________________?
comments icon0
A. Ca(free cation

B. CaO

C. None of the above

D. Ca

2125. The term applied to a material which tends to absorb moisture from the atmosphere is called__________________?
comments icon0

A. Capillary

B. Hydroscopic

C. Available

D. Gravitational

2126. Total salt affected soils of Pakistan are____________________?
comments icon0

A. 10.5 m ha

B. 6.3 m ha

C. 5.0 m ha

D. 12.3 m ha

2127. Silt stones consists of grains whose size range from____________________?
comments icon0

A. 0.625 mm

B. 0.004 mm

C. 0.0625 mm

D. Both b & c
2128. Approximately caloric value in Kcal/100 g ofwalnut is__________________?
comments icon0

A. 700

B. 600

C. 650

D. 500

2129. Who characterized soil formation as set of 4 process______________________?
comments icon0

A. Newton

B. Jinney

C. Ziking

D. Simonson
2130. The deficiency of an enzyme is greatly influenced by the______________________?
comments icon0

A. Concentration of enzyme

B. pH

C. All the above

D. Environmental temperature

2131. Which one of the following plays the role of a natural oxidants____________________?
comments icon0
A. Vitamin E

B. Vitamin C

C. Vitamin A

D. None of the above

2132. For preservation of fruit dehydration is carried out by_____________________?
comments icon0

A. Puff drying

B. Vacuum drier

C. all the above

D. Tunnel drier

2133. An ion or molecule in the coordination sphere central ion is called__________________?
comments icon0

A. Potential

B. Ligand

C. Complexion

D. Chelate

2134. The storage life of mangoes at 50F with R.H of 90% is__________________?
comments icon0
A. 1-2 weeks

B. 4-6 weeks

C. 2-4 weeks

D. 2-3 weeks

2135. Pure water has an water activity (Aw) of___________________?
comments icon0
A. 1.00

B. 0.99

C. non of these

D. 1.5

2136. To make light cakes, biscuits and muffins which leavening agent is used___________________?
comments icon0

A. All the above

B. Phosphate salts

C. Magnesium carbonate

D. Silicoaluminate

2137. Large pieces of erupted magma are called_____________________?
comments icon0

A. Sill

B. Dike

C. Volcanic block

D. Volcanic ash

2138. Color off basic matic rock is_____________________?
comments icon0

A. Light green

B. Dark colored

C. Blue

D. Yellow

2139. Cytochrome Oxidase and alcohol de hydrogenise are the examples of____________________?
comments icon0

A. Lysases

B. Oxidoreductases enzymes

C. Transferases

D. Hydrolases

2140. Microorganisms have C/N ratio of____________________?
comments icon0

A. 20:01

B. 4:1

C. 2:01

D. 12:01

2141. Tyndallization is more reliable than_____________________?
comments icon0

A. non of these

B. Sterilization

C. Blanching

D. Pasteurization

2142. Which one of the following is the non-ethylene producing fruit______________________?
comments icon0
A. Orange

B. Banana

C. Pear

D. Mango

2143. Bacteria producing toxins that cause food poisoning are known as___________________?
comments icon0

A. Clostridium

B. Staphylococcus

C. Mycodesmavin

D. Both a & b
2144. Ant caking agents used in food industry are ________________________?
comments icon0
A. Calcium silicate

B. All the above

C. Propylene glycol

D. Glycerol

2145. Which soil is suitable for nce________________?
comments icon0
A. Fine textured

B. Sandy

C. Coarse textured

D. None of the above

2146. The storage life of Cabbage at 32F with R.H of 95% is____________________?
comments icon0

A. 5-6 months

B. 3-5 months

C. 2-5 months

D. 3-4 months
2147. Which is passive factor of weathering ?
comments icon0

A. Organisms

B. Climate

C. Temperature

D. Parent material
2148. Vertical movement of water was studied by_________________?
comments icon0
A. Darcy

B. Kohler

C. Ziebig

D. Niel

2149. How many different minerals deposits are found in Pakistan ?
comments icon0

A. None of the above

B. 60

C. 30

D. 100

2150. The salinity can be reduced by the application of___________________?
comments icon0

A. All the above

B. Urea

C. Sulphuric acid

D. Lime