Description : The optimum cardinal temparature point for germination of rice seeds is– 1) 20°C – 25°C 2) 18°C – 22°C 3) 30°C – 32°C 4) 37°C – 39°C
Last Answer : 1) 20°C – 25°C
Description : The heat flux (from outside to inside) across an insulating wall with thermal conductivity, K = 0.04 W/m.°K and thickness 0.16m is 10 W/m2 . The temperature of the inside wall is - 5°C. The outside wall temperature is (A) 25°C (B) 30°C (C) 35°C (D) 40°C
Last Answer : (C) 35°C
Description : Hatchling of ferlized eggs takes place at a 21 days, 35°c b 21 days,38°c c 23 days,35°c d 23 days,38°c
Last Answer : b 21 days,38°c
Description : Optimum temperature for maximum crop development in wheat is (a) 10-15°C(b) 20-25°C (c) 25-30°C (d) 30-35°C
Last Answer : (b) 20-25°C
Description : Optimum temperature for potato tuber formation is a. 20-22°C b. 25-30°C c. 22-25°C d. All of these
Last Answer : 20-22°C
Description : The chlorine supply cylinders are generally kept at 38°C to 40°C to prevent (A) Conversion into crystals (B) It from burning (C) It from explosion (D) None of these
Last Answer : (A) Conversion into crystals
Description : Lumirhodopsin is stable only at a temperature below (A) –35°C (B) –40°C (C) –45°C (D) –50°C
Last Answer : Answer : D
Description : Optimum temperature of DNA polymerase of T. aquaticus is (A) 30°C (B) 37°C (C) 54°C (D) 72°C
Description : A microbe that is a microaerophilic mesophile would grow optimally at and a. high 02; 30°C b. low 02; 20°C c. no 02; 30°C d. low 02; 37°C
Last Answer : d. low 02; 37°C
Description : Air initially at 101. 3 kPa and 40°C and with a relative humidity of 50%, is cooled at constant pressure to 30°C. The cooled air has a (A) Higher dew point (B) Higher absolute (specific) humidity (C) Higher relative humidity (D) Higher wet bulb temperature
Last Answer : (C) Higher relative humidity
Description : Which of the following are optimum temperature conditions for making benzenediazonium chloride from aniline? (a) 0°C to 10°C (b) 20°C to 25°C (c) 30°C to 40°C (d) 45°C to 50°C
Last Answer : 0°C to 10°C
Description : Other things being suitable, what level of temperature is considered ideal for optimum growth of banana crop ? (A) 36°C (B) 18°C (C) 30°C (D) 12°C (E) 27°C
Last Answer : (C) 30°C
Description : The edible part of potato is: a. Root b. Tuber c. Rhizome d. Corm
Last Answer : Tuber
Description : Damaging stage of potato tuber month is –a) Adult b) Pupa c) Larva d) All of these
Last Answer : c) Larva
Description : Fats are solids at (A) 10°C (B) 20°C (C) 30°C (D) 40°C
Last Answer : Answer : B
Description : Thermophilic micro-organism grow well at temperature– 1) 10°C – 20°C 2) 20°C – 40°C 3) 50°C – 60°C 4) 5°C – 7°C
Last Answer : 3) 50°C – 60°C
Description : The optimum temperature for the Banana crop is— (A) 30°C (B) 23°C (C) 21•5°C (D) 26•5°C
Last Answer : (B) 23°C
Description : Maximum density of water exists at (a) 0°C (b) 4°C (c) 40°C (d) 100°C
Last Answer : (b) 4°C
Description : The fertilized eggs of Catla take about _ to _ hrs for hatching at 30°C (a) 10 to 12 (b) 12 to 14 (c) 14 to 18 (d) 18 to 24
Last Answer : (d) 18 to 24
Description : Why is potato tuber considered as a stem although it is an underground plant part? -Biology
Last Answer : answer:
Description : The type of crop which is able to fix nitrogen from air is known as (a) Legume (b) Rice (c) Tuber (d) Potato
Last Answer : Ans: (a)
Description : The tuber borne disease of potato
Last Answer : Ans. Black scurf (Rhizoctonia solani)
Description : The scientific name of Potato tuber moth
Last Answer : Ans. Phthorimaea operculella
Description : Tuber for selected for potato sowing should have
Last Answer : Ans.At least 3 buds, 2.5-3 cm diameter with 25-30 gm weight.
Description : Which of the following is not a stern modification? (1) Bulb of Onion (2) Corm of Arvi (3) Tuber of Sweet-potato (4) Tuber of Potato
Last Answer : (3) Tuber of Sweet-potato Explanation: A modified stem is a part of a plant with special features developed for special functions. Modified stems can be found either above or below ground. Examples of ... ; bulbs, corms, rhizomes, tubers and tendrils. Sweet potato is an example of a tuberous root.
Description : A potato tuber has been cut into two halves. A few drops of iodine solution are placed on the cut surface of one of the halves. What colour change will be noticed? (1) From brown to blue-black (2) From brown to orange-red (3) From blue to pink (4) From pink to blue-green
Last Answer : (1) From brown to blueblack Explanation: Any form of starch (carbohydrate) turns blue-black when iodine solution is applied to it. This is because starch is composed of polymers of ... already mentioned. The complex of iodine stuck inside the amylose coil produces a characteristic blueblack colour.
Description : potato tuber has been cut into two halves. A few drops of iodine solution are placed on the cut surface of one of the halves. What colour change will be noticed? (1) From brown to blue-black (2) From brown to orange-red (3) From blue to pink (4) From pink to blue-green
Last Answer : (1) From brown to blueblack Explanation: The Iodine test is used to test for the presence of starch. Iodine solution — iodine dissolved in an aqueous solution of potassium iodide — reacts with the starch producing a purple black colour.
Description : Green potato tuber is inedible due to: a. Carcinogenic b. Hardness c. Hollowness d. None of above
Last Answer : Carcinogenic
Description : Potato cut tuber are used for planting during a. Autumn crop b. Spring crop c. Both of above d. None of above
Last Answer : Spring crop
Description : Tuber initiation in potato starts after a. 7 th week b. 9 th week c. 5 th week d. 4 th week
Last Answer : 7 th week
Description : The “eyes” of the potato tuber are (a) root buds (b) flower buds (c) shoot buds (d) axillary buds.
Last Answer : (d) axillary buds.
Description : Which hormone breaks dormancy of potato tuber? (a) Gibberellin (b) IAA (c) ABA (d) Zeatin
Last Answer : (a) Gibberellin
Description : Herbicide which increase tuber size be sides weed control in potato a). EPTC b). Fluchloralin c). Pendimethalin d). Atrazine
Last Answer : a). EPTC
Description : A common example of stem tuber is a) Ginger b) Garlic c) Onion d) Potato
Last Answer : d) Potato
Description : Which of the following is not a stem modification ? (1) Bulb of Onion (2) Corm of Arvi (3) Tuber of Sweet-potato (4) Tuber of Potato
Last Answer : Tuber of Sweet-potato
Description : A potato tuber has been cut into two halves. A few drops of iodine solution are placed on the cut surface of one of the halves. What colour change will be noticed? (1) From brown to blue–black (2) From brown to orange–red (3) From blue to pink (4) From pink to blue–green
Last Answer : From brown to blue–black
Last Answer : From brown to blue-black
Description : The normal temperature of the human body is – (1) 37°C (2) 37°F (3) 104°F (4) 36.8°C
Last Answer : (1) 37°C Explanation: The normal human body temperature is often stated as 36.5–37.5 °C.
Description : In vapour compression refrigeration system, if the evaporator temperature and the condenser temperatures are -13°C and 37°C respectively, the Carnot COP will be (A) 5.2 (B) 6.2 (C) 0.168 (D) Data insufficient, can't be found out
Last Answer : A) 5.2
Description : Nitrogen gas is filled in a container of volume 2.32 L at 32°C and 4.7 atm pressure. Calculate the number of moles of the gas.
Last Answer : Nitrogen gas is filled in a container of volume 2.32 L at 32°C and 4.7 atm pressure. Calculate the number of moles of the gas.
Description : Match the following : [IAS 1999] A. Cotton 1. Rainfall 1000-1500 mm; Temperature 40°-60°C B. Flax 2. Rainfall 1500-2000 mm; Temperature 25°-35°C C. Sugarbeet 3. Rainfall 600-S00 mm; Temperature 5°-18°C D. Jute 4. Rainfall 500-1000 mm; ... 1 3 4 2 (b) 2 3 5 4 (c) 4 5 2 1 (d) 4 3 5 2 shop.ssbcrack.com
Last Answer : Ans: (d)
Description : Unsaturated air (with dry bulb temperature and dew point being 35°C and 18°C respectively) is passed through a water spray chamber maintained at 15°C. The air will be cooled (A) And ... (C) At the same relative humidity (D) And dehumidified with decrease in wet bulb temperature
Last Answer : (D) And dehumidified with decrease in wet bulb temperature
Description : Which of the following situations can be approximated to a steady state heat transfer system? (A) A red hot steel slab (having outside surface temperature as 1300°C) exposed to the atmospheric air at ... flowing at the rate of 6 Kg/minute through a copper pipe exposed to atmospheric air at 35°C
Last Answer : (B) 10 kg of dry saturated steam at 8 kgf/cm2 flowing through a short length of stainless steel pipe exposed to atmospheric air at 35°C
Description : Which one of the following best describes the growth conditions for a typical fungus? a. pH 3; 23°C; no oxygen gas present b. pH 8; 30°C; no oxygen gas present c. pH 6; 30°C; oxygen gas present d. pH 3; 23°C; oxygen gas present
Last Answer : c. pH 6; 30°C; oxygen gas present
Description : Unsaturated air (with dry and wet bulb temperatures being 35 and 25°C respectively) is passed through water spray chamber maintained at 35°C. The air will be (A) Cooled (B) Humidified (C) Both (A) & (B) (D) Dehumidified
Last Answer : (B) Humidified
Description : How long after planting potato seeds should urea be applied topically ?
Last Answer : Urea should be applied 30 to 35 days after planting of potato seeds .
Description : How much irrigation is required for potato cultivation ?
Last Answer : Two to four irrigations are required for potato cultivation.
Description : What is the distance from seed to seed when used as cut potato ?
Last Answer : When used as cut potato, distance from seed to seed should be kept 10 to 15 cm.
Description : What is the distance from line to line in case of full light for potato cultivation ?
Last Answer : In case of light used for potato cultivation, the distance from line to line will be 60 cm.