100525 + Interview Questions in GENERAL QA IN GENERAL AWARENESS

1.	The gaseous reactions `A_(2) to 2A` is first order in `A_(2)` After 12.3 minutes `65% ` of `A_(2)` remains undecomposed, How long will it take to decompose `90% ` of `A_(2)` ? What is the half- life of the reactions
Answer» (i) Time required for 90% reaction = 65.8 min (ii) Half- life period `= t_(1//2) = 19.8` min

Discussion

2.	Synthetic rubber is also called:(a) Gum rubber(b) Caoutchouc(c) Buna-S(d) Gum elastic
Answer» The correct choice is (c) Buna-S The best explanation: It is sold under different names. Some of them are neoprene, buna-s, hypalon, silastic, etc. Gum rubber, caoutchouc and gum elastic are names used for natural rubber.

Discussion

3.	What is added to rubber to make it a thermosetting polymer?(a) Potassium(b) Sulphur(c) Sodium(d) Phosphorous
Answer» The correct option is (b) Sulphur Best explanation: The process of vulcanization makes rubber get converted into a heavily cross-linked, insoluble and infusible compound. It is done by adding sulphur and litharge (PbO).

Discussion

4.	Rubber seed oil can be used in:(a) Paint(b) Medicine(c) Varnish(d) Fuel
Answer» Correct choice is (a) Paint Explanation: It can be used as a semi-drying oil in paints. It partially hardens when exposed to air unlike other drying oils in the paint.

Discussion

5.	How many different categories of glass are there?(a) 5(b) 4(c) 2(d) 3
Answer» Right option is (d) 3 To elaborate: For the purpose of classification, glass can be grouped into 3 categories: Soda-lime glass, Potash-lime glass and Potash-lead glass.

Discussion

6.	A narrow gradation is also called:(a) Gap gradation(b) Uniform gradation(c) Rich gradation(d) Open gradation
Answer» Correct choice is (b) Uniform gradation The explanation is: A graph is plotted after performing sieve analysis. It shows different curves. A narrow gradation is also called uniform gradation. It shows that the aggregate is of approximately the same size.

Discussion

7.	Rubber latex is used for:(a) Bonding wood plys(b) Bonding rubber to walls(c) Bonding rubber to wood(d) Bonding tools
Answer» Correct option is (c) Bonding rubber to wood The best I can explain: It is a solution of rubber hydrochloride. It has a sticky texture and has excellent adhesive property.

Discussion

8.	What should be observed when a brick is broken?(a) Parallel strata(b) Homogeneous surface(c) Pores(d) Brown colour
Answer» Correct choice is (b) Homogeneous surface Easy explanation: Brick should have uniform red coloured and homogeneous strata. It should not have any visible pores.

Discussion

9.	What changes are observed when a glass is heated?(a) It becomes softer(b) It bursts(c) It solidifies(d) It disintegrates
Answer» Right answer is (a) It becomes softer Best explanation: It becomes softer and softer with a rise in temperature and is ultimately transformed into a mobile liquid.

Discussion

10.	Assertion : Yb+2 is more stable in compare to Gd+2Reason : The electronic configuration of Gd is [Xe] 4f7 5d2 6s2.(1) If both assertion and reason are true and reason is the correct explanation of assertion. (2) If both assertion and reason are true but reason is not the correct explanation of assertion. (3) If assertion is true but reason is false. (4) If both assertion and reason are false.
Answer» Correct option (3) If assertion is true but reason is false. Explanation: Yb⁺²= [Xe]4f^14, 5d⁰ , 6s⁰ Gd⁺² = [Xe]4f⁷ , 5d¹, 6s⁰ so Yb⁺² is more stable than Gd⁺²

10.

Assertion : Yb+2 is more stable in compare to Gd+2Reason : The electronic configuration of Gd is [Xe] 4f7 5d2 6s2.(1) If both assertion and reason are true and reason is the correct explanation of assertion. (2) If both assertion and reason are true but reason is not the correct explanation of assertion. (3) If assertion is true but reason is false. (4) If both assertion and reason are false.

Answer»

Correct option (3) If assertion is true but reason is false.

Explanation:

Yb⁺²= [Xe]4f^14, 5d⁰ , 6s⁰

Gd⁺² = [Xe]4f⁷ , 5d¹, 6s⁰

so Yb⁺² is more stable than Gd⁺²

Discussion

11.	Calculate radiation power for sphere whose temperature is 227ºC and radius 2 m and emissivity 0.8.(1) 1425W (2) 1500 W (3) 1255 W (4) 1575W
Answer» Correct option (1) 1425W Explanation: P = σ A e T⁴

11.

Calculate radiation power for sphere whose temperature is 227ºC and radius 2 m and emissivity 0.8.(1) 1425W (2) 1500 W (3) 1255 W (4) 1575W

Answer»

Correct option (1) 1425W

Explanation:

P = σ A e T⁴

Discussion

12.	Assertion : Macro properties of gas are affected with increase in height.Reason : These properties of gases depend on thermodynamic parameters.(1) If both assertion and reason are true and reason is the correct explanation of assertion.(2) If both assertion and reason are true but reason is not the correct explanation of assertion.(3) If assertion is true but reason is false.(4) If both assertion and reason are false.
Answer» (4) If both assertion and reason are false.

Discussion

13.	Find out work done to expend soup bobble to radius R = 5 cm (surface tension of water = 0.1 N/m) (1) 2.8 × 10–3 J (2) 6.28 × 10–3 J (3) 3.7 × 10–3 J (4) 5.8 × 10–3 J
Answer» Correct option: (2) 6.28 × 10^–3 J Explanation: Work = 2(4πR²)(T)

13.

Find out work done to expend soup bobble to radius R = 5 cm (surface tension of water = 0.1 N/m) (1) 2.8 × 10–3 J (2) 6.28 × 10–3 J (3) 3.7 × 10–3 J (4) 5.8 × 10–3 J

Answer»

Correct option: (2) 6.28 × 10^–3 J

Explanation:

Work = 2(4πR²)(T)

Discussion

14.	Assertion: Coefficient of performance in refrigrator may be greater than one.Reason: Heat extracted from lower temperature reservoir.(1) If both assertion and reason are true and reason is the correct explanation of assertion.(2) If both assertion and reason are true but reason is not the correct explanation of assertion.(3) If assertion is true but reason is false.(4) If both assertion and reason are false.
Answer» (2) If both assertion and reason are true but reason is not the correct explanation of assertion.

14.

Assertion: Coefficient of performance in refrigrator may be greater than one.Reason: Heat extracted from lower temperature reservoir.(1) If both assertion and reason are true and reason is the correct explanation of assertion.(2) If both assertion and reason are true but reason is not the correct explanation of assertion.(3) If assertion is true but reason is false.(4) If both assertion and reason are false.

Answer»

(2) If both assertion and reason are true but reason is not the correct explanation of assertion.

Discussion

15.	Assertion: Biofortification is used to increase nutrient value of crops Reason: Meristem culture is used to obtain virus resistant plants (1) If both assertion and reason are true and reason is the correct explanation of assertion. (2) If both assertion and reason are true but reason is not the correct explanation of assertion. (3) If assertion is true but reason is false. (4) If both assertion and reason are false.
Answer» (3) If assertion is true but reason is false.

Discussion

16.	Assertion : Photodiode current work in reverse bias.Reason : Change in diode increases with increase in intensity.(1) If both assertion and reason are true and reason is the correct explanation of assertion.(2) If both assertion and reason are true but reason is not the correct explanation of assertion.(3) If assertion is true but reason is false.(4) If both assertion and reason are false.
Answer» (2) If both assertion and reason are true but reason is not the correct explanation of assertion.

Discussion

17.	The major ore of aluminium is—(A) Bauxite (B) Haematite(C) Calamine (D) None of these
Answer» The major ore of aluminium is Bauxite.

Discussion

18.	General formula of Alkene is—(A) CnH2n (B) CnH2n+2(C) CnH2n–2 (D) CnH2n–1
Answer» General formula of Alkene is C_nH_2n

Discussion

19.	What is turgor movement?
Answer» Turgor movement is due to the difference of turgidity of the cells in the lower half and upper half of pulvinus (petiole of leaf). When leaf of touch-me-not plant(Mimosa pudica,) is touched, the electrical signal send chemical signals from leaflets to pulvinus (petiole) of leaf. Cells in the lower half of pulvinus lose water and become flaccid, while cells in the upper half of pulvinus become turgid due to accumulation of more water. Hence, leaf droops down for a short time.

Discussion

20.	Label the parts (a), (b), (c) and (d) and show the direction of flow of electrical signals in the figure.
Answer» (a) Sensory neuron (b)Spinal cord (CNS) (c) Motor neuron (d) Effector - muscle in arm Flow of electrical signals: Receptors in hand ==> Sensory neurons ==. Spinal cord (CNS) ==>Motor neurons ==> Effector - muscles in arm

20.

Label the parts (a), (b), (c) and (d) and show the direction of flow of electrical signals in the figure.

Answer»

(a) Sensory neuron

(b)Spinal cord (CNS)

(c) Motor neuron

(d) Effector - muscle in arm

Flow of electrical signals: Receptors in hand ==> Sensory neurons ==. Spinal cord (CNS) ==>Motor neurons ==> Effector - muscles in arm

Discussion

21.

Name those parts of the flower which serve the same function as the following do in the animals:(i) Testis (ii) Ovary (iii) Eggs (iv) Sperms

Answer»

In case of animal	In case of flower
Testis Ovary Eggs Sperms	Anther/stamen/androecium Ovary Ovules Pollen grains

Discussion

22.	In the reaction 2C + O2-> 2CO, if the heat liberated is 10 J, what is the heat of formation of CO?(a) -5 J(b) 5 J(c) -10 J(d) 10 J
Answer» Right option is (a) -5 J For explanation: Heat of formation = -10/2 = -5 J.

Discussion

23.	In the reaction 2N -> N2, if the heat liberated is 6 J, what is the heat of formation of N2?(a) – 6 J(b) 6 J(c) 0(d) Cannot be determined
Answer» The correct choice is (a) – 6 J To elaborate: Heat of formation = -6 J.

Discussion

24.	What do you understand by the term periodicity? Does the periodicity in properties is a function of valence electrons? Illustrate.
Answer» When the elements are arranged in order of increasing atomic numbers, elements with similar chemical properties are repeated at definite intervals. This is known as periodicity. yes, this periodicity is due to the periodicity in the number of electrons in the outermost shell of the atoms of the elements. If elements having the same number of valence electrons are grouped together, the elements falling within each group are similar in chemical properties

Discussion

25.	N2 + 2O2 -> 2NO2, what is the extent of reaction if 6 moles of NO2 is produced?(a) 3(b) 6(c) 12(d) 18
Answer» The correct answer is (a) 3 To explain I would say: Extent of reaction = (6 – 0)/2 = 3.

Discussion

26.	What is the value of higher heating value if the value of lower heating value is 10 J and the product has 5 moles of H2O and Enthalpy of vaporization is 4 J/mole at standard conditions?(a) 10 J(b) 20 J(c) 30 J(d) 40 J
Answer» Right answer is (c) 30 J The explanation is: HHV = 10 + 5*4 = 30 J.

Discussion

27.	What is the difference between lower heating value and higher heating value if the product has 2 moles of H2O and Enthalpy of vaporization is 40 J/mole at standard conditions?(a) -40 J(b) 40 J(c) -80 J(d) 80 J
Answer» Right answer is (c) -80 J The explanation is: LHV – HHV = -2*40 = -80 J.

Discussion

28.	What is the heat of reaction for H2 + Cl2 -> 2HCl, if the heat of combustion of H2 = 2 J, Cl2 = 10 J, and HCl = 10 J?(a) -8 J(b) 8 J(c) -10 J(d) 10 J
Answer» Correct choice is (a) -8 J The best I can explain: Heat of reaction = 10 + 2 – 2*10 = -8 J.

Discussion

29.	What is extent of reaction of a in the reaction 2CO + O2 -> 2CO2, if 20 moles CO2 is produced?(a) 5(b) 10(c) 20(d) 40
Answer» The correct answer is (b) 10 Easy explanation: Extent of reaction = (20 – 0)/2 = 10.

Discussion

30.	What is the heating value of 10 Kg of coal with heat of combustion 10 J/Kg?(a) -10 J(b) 10 J(c) -100 J(d) 100 J
Answer» Correct choice is (c) -100 J For explanation I would say: Heating value = – Heat of combustion = -10*10 = -100 J.

Discussion

31.	What is the difference between higher heating value and lower heating value if the product has 5 moles of H2O and Enthalpy of vaporization is 10 J/mole at standard conditions?(a) 10 J(b) -10 J(c) 50 J(d) -50 J
Answer» Correct answer is (c) 50 J To explain I would say: HHV – LHV = 5*10 = 50 J.

Discussion

32.	Two feeds, 10 moles with H = 10 J/mole and 5 with H = 25 J/mole, what is the enthalpy of products?(a) 5 J/mole(b) 10 J/mole(c) 15 J/mole(d) 20 J/mole
Answer» The correct choice is (c) 15 J/mole Best explanation: Energy balance: 1010 + 525 = 15*H, => H = 15 J/mole.

Discussion

33.	What is the heating value of 2 Kg of coal with heat of combustion 15 J/Kg?(a) -15 J(b) 15 J(c) -30 J(d) 30 J
Answer» Right option is (c) -30 J Easy explanation: Heating value = – Heat of combustion = -15*2 = -30 J.

Discussion

34.	Three feeds, 10 mole with H = 5 J/mole, 10 mole with H = 15 J/mole and 5 mole with 20 J/mole, what is the enthalpy of the products?(a) 10 J/mole(b) 12 J/mole(c) 15 J/mole(d) 24 J/mole
Answer» The correct option is (b) 12 J/mole For explanation I would say: 25H = 105 + 1015 + 520, => H = 12 J/mole.

Discussion

35.	The specific volume of a gas is 5 m^3/Kg, at 10 Pa, H = 50 J/Kg and at 20 Pa, H = 100 J/Kg, what is the heat transferred to the system?(a) 0(b) 50 J/Kg(c) 100 J/Kg(d) 150 J/Kg
Answer» Correct option is (a) 0 The explanation is: Q = ∆H – V∆P = (100 – 50) – 5(20 – 10) = 0.

Discussion

36.	The specific volume of a gas is 5 m^3/Kg, at 25 Pa, H = 40 J/Kg and at 40 Pa, H = 90 J/Kg, what is the heat transferred to the system?(a) -5 J/Kg(b) 5 J/Kg(c) -25 J/Kg(d) 25 J/Kg
Answer» The correct option is (c) -25 J/Kg Explanation: Q = ∆H – V∆P = (90 – 40) – 5(40 – 25) = -25 J/Kg.

Discussion

37.	The specific volume of a gas is 2 m^3/Kg, at 12 Pa, H = 30 J/Kg and at 15 Pa, H = 45 J/Kg, what is the heat transferred to the system?(a) 6 J/Kg(b) 9 J/Kg(c) 12 J/Kg(d) 15 J/Kg
Answer» The correct answer is (b) 9 J/Kg For explanation: Q = ∆H – V∆P = (45 – 30) – 2(15 – 12) = 15 – 6 = 9 J/Kg.

Discussion

38.	The specific volume of a gas is 3 m^3/Kg, at 6 Pa, H = 4 J/Kg and at 9 Pa, H = 14 J/Kg, what is the heat transferred to the system?(a) 0(b) 1 J/Kg(c) 5 J/Kg(d) 25 J/Kg
Answer» Correct answer is (b) 1 J/Kg Easiest explanation: Q = ∆H – V∆P = (14 – 4) – 3(9 – 6) = 1 J/Kg.

Discussion

39.	What is the heat transferred to the system, if change in enthalpy is 30 J and pressure, volume changed from 8 Pa, 5 m^3 to 4 Pa, 12 m^3?(a) 12 J(b) 15 J(c) 18 J(d) 22 J
Answer» Correct option is (d) 22 J To elaborate: Q = ∆H – V∆P = 30 – (412 – 85) = 22 J.

Discussion

40.	Which of the following represents vaporization?(a) Change of vapor to liquid(b) Change of vapor to solid(c) Change of solid to vapor(d) Change of liquid to vapor
Answer» Correct choice is (d) Change of liquid to vapor The best I can explain: Vaporization is the reverse of condensation which is a change of liquid to vapor.

Discussion

41.	In a reaction the feed is 5 moles of 0.5 glucose and 0.5 sucrose, and another feed of 15 moles of 0.3 glucose and 0.7 sucrose, what is the fraction of glucose in the products?(a) 0.35(b) 0.45(c) 0.75(d) 0.95
Answer» Correct choice is (a) 0.35 To explain: Glucose balance: 50.5 + 150.3 = x*20, => x = 0.35.

Discussion

42.	Two feeds, F1 with H = 10 J/mole and F2 with H = 20 J/mole, and product 10 moles with H = 15 J/mole, what is the F1?(a) 5 mole(b) 10 mole(c) 15 mole(d) 20 mole
Answer» The correct option is (a) 5 mole The best explanation: Energy balance: 10F1 + 20F2 = 10*15, => F1 + F2 = 10, => F1 = 5 mole.

Discussion

43.	What is the heat transferred to the system, if a change in enthalpy is 25 J and change in pressure is 5 Pa at volume 3 m^3?(a) 5 J(b) 10 J(c) 15 J(d) 20 J
Answer» Correct option is (b) 10 J Easiest explanation: Q = ∆H – V∆P = 25 – 3*5 = 10 J.

Discussion

44.	Describe the central nervous system in human beings.
Answer» The central nervous system in human beings consists of the brain and spinal cord. (i) Brain: Brain is the highest coordinating centre in the body. It is covered by meninges, which is made up of three layers. It is protected by, cranium. a brain is broadly divided into: (a) Forebrain: The forebrain includes cerebrum; and olfactory lobes. The cerebrum is the largest part of the brain. It consists of two cerebral hemispheres. Sensory and motor receptors are present in the brain. There are various regions for reception of vision (occipital lobe), reception of sound (temporal lobe), touch, smell, temperature (parietal lobe) and muscular activities (frontal lobe). Olfactory lobes are one of a pair and receive olfactory nerves. (b)Midbrain: It is the small portion of the brain that connects cerebrum with the other parts of the brain and spinal cord. (c) Hindbrain: It consists of cerebellum, pons and medulla oblongata. The cerebellum is responsible for coordination and adjustment of movement and posture" Pons regulate respiration. Medulla oblongata regulates swallowing, coughing, sneezing and vomiting. (ii) Spinal cord: Medulla oblongata extends downwards, enclosed in the vertebral column to Form a cylindrical structure known n as the spinal cord. It is also covered by meninges. It is the reflex centre of the body.

Discussion

45.	Which give colored carbonate precipitate?(1) Hg22+(2) Sr+2 (3) Bi+3 (4) Li+
Answer» Correct option (2) Sr⁺² Explanation: Carbonate of Bi³⁺ is pale yellow colored, other carbonates of Hg₂^{+2 ,} Sr⁺² & Li⁺ are colorless

45.

Which give colored carbonate precipitate?(1) Hg22+(2) Sr+2 (3) Bi+3 (4) Li+

Answer»

Correct option (2) Sr⁺²

Explanation:

Carbonate of Bi³⁺ is pale yellow colored, other carbonates of Hg₂^{+2 ,} Sr⁺² & Li⁺ are colorless

Discussion

46.	What is the heat transferred to the system, if a change in internal energy is 10 J?(a) 0(b) -10 J(c) 10 J(d) Cannot be determined
Answer» The correct option is (c) 10 J Easiest explanation: Q = ∆U = 10 J.

Discussion

47.	A graph plot between x/m and pressureThe value of n at point A is(1) 2 (2) 1 (3)1/2(4) 3
Answer» The Correct option is (1) 2

Discussion

48.	Assertion: Out of CrO3 & Al2O3, CrO3 having lower melting point than Al2O3. Reason: Oxidation state of Cr in CrO3 is high.(1) If both assertion and reason are true and reason is the correct explanation of assertion. (2) If both assertion and reason are true but reason is not the correct explanation of assertion. (3) If assertion is true but reason is false. (4) If both assertion and reason are false.
Answer» (2) Both Assertion and reason are correct but reason is not correct explanation of assertion.

Discussion

49.	Strong oxidizing agent used in purification of water(1) Cl2O (2) NO3 (3) NO2 (4) OF2
Answer» Correct option (1) Cl₂O Explanation: Cl₂O is a good oxidizing agent and used to purify water

49.

Strong oxidizing agent used in purification of water(1) Cl2O (2) NO3 (3) NO2 (4) OF2

Answer»

Correct option (1) Cl₂O

Explanation:

Cl₂O is a good oxidizing agent and used to purify water

Discussion

50.	Which of the following has maximum iron content?(1) Cast Iron (2) Wrought Iron (3) Pig Iron (4) Stainless steel
Answer» (2) Wrought Iron

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

The gaseous reactions `A_(2) to 2A` is first order in `A_(2)` After 12.3 minutes `65% ` of `A_(2)` remains undecomposed, How long will it take to decompose `90% ` of `A_(2)` ? What is the half- life of the reactions

Synthetic rubber is also called:(a) Gum rubber(b) Caoutchouc(c) Buna-S(d) Gum elastic

What is added to rubber to make it a thermosetting polymer?(a) Potassium(b) Sulphur(c) Sodium(d) Phosphorous

Rubber seed oil can be used in:(a) Paint(b) Medicine(c) Varnish(d) Fuel

How many different categories of glass are there?(a) 5(b) 4(c) 2(d) 3

A narrow gradation is also called:(a) Gap gradation(b) Uniform gradation(c) Rich gradation(d) Open gradation

Rubber latex is used for:(a) Bonding wood plys(b) Bonding rubber to walls(c) Bonding rubber to wood(d) Bonding tools

What should be observed when a brick is broken?(a) Parallel strata(b) Homogeneous surface(c) Pores(d) Brown colour

What changes are observed when a glass is heated?(a) It becomes softer(b) It bursts(c) It solidifies(d) It disintegrates

Calculate radiation power for sphere whose temperature is 227ºC and radius 2 m and emissivity 0.8.(1) 1425W (2) 1500 W (3) 1255 W (4) 1575W

Find out work done to expend soup bobble to radius R = 5 cm (surface tension of water = 0.1 N/m) (1) 2.8 × 10–3 J (2) 6.28 × 10–3 J (3) 3.7 × 10–3 J (4) 5.8 × 10–3 J

The major ore of aluminium is—(A) Bauxite (B) Haematite(C) Calamine (D) None of these

General formula of Alkene is—(A) CnH2n (B) CnH2n+2(C) CnH2n–2 (D) CnH2n–1

What is turgor movement?

Label the parts (a), (b), (c) and (d) and show the direction of flow of electrical signals in the figure.

Name those parts of the flower which serve the same function as the following do in the animals:(i) Testis (ii) Ovary (iii) Eggs (iv) Sperms

In the reaction 2C + O2-> 2CO, if the heat liberated is 10 J, what is the heat of formation of CO?(a) -5 J(b) 5 J(c) -10 J(d) 10 J

In the reaction 2N -> N2, if the heat liberated is 6 J, what is the heat of formation of N2?(a) – 6 J(b) 6 J(c) 0(d) Cannot be determined

What do you understand by the term periodicity? Does the periodicity in properties is a function of valence electrons? Illustrate.

N2 + 2O2 -> 2NO2, what is the extent of reaction if 6 moles of NO2 is produced?(a) 3(b) 6(c) 12(d) 18

What is the value of higher heating value if the value of lower heating value is 10 J and the product has 5 moles of H2O and Enthalpy of vaporization is 4 J/mole at standard conditions?(a) 10 J(b) 20 J(c) 30 J(d) 40 J

What is the difference between lower heating value and higher heating value if the product has 2 moles of H2O and Enthalpy of vaporization is 40 J/mole at standard conditions?(a) -40 J(b) 40 J(c) -80 J(d) 80 J

What is the heat of reaction for H2 + Cl2 -> 2HCl, if the heat of combustion of H2 = 2 J, Cl2 = 10 J, and HCl = 10 J?(a) -8 J(b) 8 J(c) -10 J(d) 10 J

What is extent of reaction of a in the reaction 2CO + O2 -> 2CO2, if 20 moles CO2 is produced?(a) 5(b) 10(c) 20(d) 40

What is the heating value of 10 Kg of coal with heat of combustion 10 J/Kg?(a) -10 J(b) 10 J(c) -100 J(d) 100 J

What is the difference between higher heating value and lower heating value if the product has 5 moles of H2O and Enthalpy of vaporization is 10 J/mole at standard conditions?(a) 10 J(b) -10 J(c) 50 J(d) -50 J

Two feeds, 10 moles with H = 10 J/mole and 5 with H = 25 J/mole, what is the enthalpy of products?(a) 5 J/mole(b) 10 J/mole(c) 15 J/mole(d) 20 J/mole

What is the heating value of 2 Kg of coal with heat of combustion 15 J/Kg?(a) -15 J(b) 15 J(c) -30 J(d) 30 J

Three feeds, 10 mole with H = 5 J/mole, 10 mole with H = 15 J/mole and 5 mole with 20 J/mole, what is the enthalpy of the products?(a) 10 J/mole(b) 12 J/mole(c) 15 J/mole(d) 24 J/mole

The specific volume of a gas is 5 m^3/Kg, at 10 Pa, H = 50 J/Kg and at 20 Pa, H = 100 J/Kg, what is the heat transferred to the system?(a) 0(b) 50 J/Kg(c) 100 J/Kg(d) 150 J/Kg

The specific volume of a gas is 5 m^3/Kg, at 25 Pa, H = 40 J/Kg and at 40 Pa, H = 90 J/Kg, what is the heat transferred to the system?(a) -5 J/Kg(b) 5 J/Kg(c) -25 J/Kg(d) 25 J/Kg

The specific volume of a gas is 2 m^3/Kg, at 12 Pa, H = 30 J/Kg and at 15 Pa, H = 45 J/Kg, what is the heat transferred to the system?(a) 6 J/Kg(b) 9 J/Kg(c) 12 J/Kg(d) 15 J/Kg

The specific volume of a gas is 3 m^3/Kg, at 6 Pa, H = 4 J/Kg and at 9 Pa, H = 14 J/Kg, what is the heat transferred to the system?(a) 0(b) 1 J/Kg(c) 5 J/Kg(d) 25 J/Kg

What is the heat transferred to the system, if change in enthalpy is 30 J and pressure, volume changed from 8 Pa, 5 m^3 to 4 Pa, 12 m^3?(a) 12 J(b) 15 J(c) 18 J(d) 22 J

Which of the following represents vaporization?(a) Change of vapor to liquid(b) Change of vapor to solid(c) Change of solid to vapor(d) Change of liquid to vapor

In a reaction the feed is 5 moles of 0.5 glucose and 0.5 sucrose, and another feed of 15 moles of 0.3 glucose and 0.7 sucrose, what is the fraction of glucose in the products?(a) 0.35(b) 0.45(c) 0.75(d) 0.95

Two feeds, F1 with H = 10 J/mole and F2 with H = 20 J/mole, and product 10 moles with H = 15 J/mole, what is the F1?(a) 5 mole(b) 10 mole(c) 15 mole(d) 20 mole

What is the heat transferred to the system, if a change in enthalpy is 25 J and change in pressure is 5 Pa at volume 3 m^3?(a) 5 J(b) 10 J(c) 15 J(d) 20 J

Describe the central nervous system in human beings.

Which give colored carbonate precipitate?(1) Hg22+(2) Sr+2 (3) Bi+3 (4) Li+

What is the heat transferred to the system, if a change in internal energy is 10 J?(a) 0(b) -10 J(c) 10 J(d) Cannot be determined

A graph plot between x/m and pressureThe value of n at point A is(1) 2 (2) 1 (3)1/2(4) 3

Strong oxidizing agent used in purification of water(1) Cl2O (2) NO3 (3) NO2 (4) OF2

Which of the following has maximum iron content?(1) Cast Iron (2) Wrought Iron (3) Pig Iron (4) Stainless steel