100525 + Interview Questions in GENERAL QA IN GENERAL AWARENESS

1.	In te decomposition of Ammonia it was found that at 50 torr pressure `t_((1//2))` was 3.64 hour while at 100 torr `t_((1//2))` was 1.82 hours. Then order of reaction would be:
Answer» Correct Answer - 2 `t_(1//2)alpha(a)^(1n)`

Discussion

2.	A group consists of 7 boys and 5 girls. Find the number of ways in which a team of 5 members can be selected so as to have at least one boy and one girl.
Answer» Number of ways of selecting 1B and 4G = ⁷C₁ × ⁵C₄ = 35 2 B and 3G = ⁷C₂ × ⁵C₃ = 210 3 B and 2 G = ⁷C₃ × ⁵C₂ = 350 4. B and 1G = ⁷C₄ × ⁵C₁ = 175 Total number of selections = 770.

2.

A group consists of 7 boys and 5 girls. Find the number of ways in which a team of 5 members can be selected so as to have at least one boy and one girl.

Answer»

Number of ways of selecting

1B and 4G = ⁷C₁ × ⁵C₄ = 35

2 B and 3G = ⁷C₂ × ⁵C₃ = 210

3 B and 2 G = ⁷C₃ × ⁵C₂ = 350

4. B and 1G = ⁷C₄ × ⁵C₁ = 175

Total number of selections = 770.

Discussion

3.	State and prove binomial theorem for positive integers.
Answer» Statement: “If’n’ is a +ve integer then (x + a)ⁿ = ⁿC₀ xⁿ a⁰ + ⁿC₁ x^n-1 a¹+ ⁿC₂ x^n-2a² + ………….. + ⁿC_n x⁰ aⁿ. Proof : (By Mathematical induction): Let p(n) : (x + a)ⁿ = ⁿC₀ xⁿ a⁰ + ⁿC₁ x^n-1a¹ + ⁿC₂ x^n-2a² + ………….. + ⁿC_n x⁰ aⁿ . Step1 : P(1) is true when n = 1, L.H.S = (x + a)¹ = x + a; RHS = ¹c₀ x¹ a⁰ + ¹_c1 x⁰a¹ = 1.x.1 + 1.1.a = x+a L.H.S. = R.H.S. ⇒ ∴ P(1) is true Step 2: Assume that P(m) is true i.e., (x + a)^m = ^mc₀ x^m a⁰ + ^mc₁ x^m-1 a₁ + ^mc₂ x^m-2 a² + ………….+ ^mc_mx⁰a^m …….(i) Step 3 : P(m + 1)^m+1 is true i.e. (x + a)^m+1= m+¹c₀ x^m+1 a⁰ +^m+1c₁ x^ma¹ + ^m+1c₂x^m-1a² + …….. + ^m+1c_m+1 x⁰a^m+1 Multiply both sides of equation (i) by (x+a) ∴ (x + a)^m (x + a) = (x + a) [^mc₀ x^m a⁰ + ^mc₁ x^m-1 a¹ + ^mc₂x^m-2 a² + ………….+ ^mc_mx⁰a^m] (x + a)^m+1= x [^mc₀ x^m a⁰ + ^mc₁x^m-1 a¹ + ^mc₂ x^m-2 a²+ ………….+ ^mc_mx⁰a^m] + a[^mc₀ x^ma⁰ + ^mc₁ x^m-1 a¹ +^mc₂x^m-2a² + ………….+ ^mc_mx⁰a^m] (x + a)^{m + 1} = ^mc₀x^m+1 a⁰ + ^mc₁x^ma¹ + ^mc₂ x^m-1 a² + ……. + ^mc_m x⁰ a^m+1 = ^mc₀x^m+1a⁰ + (^mc₁ + ^mc₀)x^m a¹ + (^mc₂ + ^mc₁) x^m-1 a² + ………… + (^mc_m + ^mc_m-1) x¹a^m + ^mc_m x⁰a^m+1 (x + a)^m+1 = ^m+1c₀ x^m+1a⁰ + ^m+1c¹ x^m a¹ + ^m+1c₂ x^m-1 a² + …….. + ^m+1c_m+1x⁰a^m+1 [∴ ^mc_m = ^m+1c₀ ^mc₁ + ^mc₀ = ^m+1c₁ ^mc₂ + ^mc₁ = ^m+1c₂ ^m+1c_m] ∴ P(m + 1) is true Conclusion: P(1) is true, P(m) is true ⇒ P(m+1) is true ∴ By principle of mathematical induction the result is true for all natural numbers n. Notes: 1. The number of terms in the expansion of (x + a)ⁿ is n + 1. 2. The Gen term of binomial expansion is T_r+1 = ⁿc_r x^n-ra^r.

3.

State and prove binomial theorem for positive integers.

Answer»

Statement: “If’n’ is a +ve integer then

(x + a)ⁿ = ⁿC₀ xⁿ a⁰ + ⁿC₁ x^n-1 a¹+ ⁿC₂ x^n-2a² + ………….. + ⁿC_n x⁰ aⁿ.

Proof : (By Mathematical induction):

Let p(n) : (x + a)ⁿ = ⁿC₀ xⁿ a⁰ + ⁿC₁ x^n-1a¹ + ⁿC₂ x^n-2a² + ………….. + ⁿC_n x⁰ aⁿ .

Step1 : P(1) is true

when n = 1, L.H.S = (x + a)¹ = x + a; RHS = ¹c₀ x¹ a⁰ + ¹_c1 x⁰a¹ = 1.x.1 + 1.1.a = x+a

L.H.S. = R.H.S. ⇒ ∴ P(1) is true

Step 2: Assume that P(m) is true

i.e., (x + a)^m = ^mc₀ x^m a⁰ + ^mc₁ x^m-1 a₁ + ^mc₂ x^m-2 a² + ………….+ ^mc_mx⁰a^m …….(i)

Step 3 : P(m + 1)^m+1 is true

i.e. (x + a)^m+1= m+¹c₀ x^m+1 a⁰ +^m+1c₁ x^ma¹ + ^m+1c₂x^m-1a² + …….. + ^m+1c_m+1 x⁰a^m+1

Multiply both sides of equation (i) by (x+a)

∴ (x + a)^m (x + a) = (x + a) [^mc₀ x^m a⁰ + ^mc₁ x^m-1 a¹ + ^mc₂x^m-2 a² + ………….+ ^mc_mx⁰a^m]

(x + a)^m+1= x [^mc₀ x^m a⁰ + ^mc₁x^m-1 a¹ + ^mc₂ x^m-2 a²+ ………….+ ^mc_mx⁰a^m] + a[^mc₀ x^ma⁰ + ^mc₁ x^m-1 a¹ +^mc₂x^m-2a² + ………….+ ^mc_mx⁰a^m]

(x + a)^{m + 1} = ^mc₀x^m+1 a⁰ + ^mc₁x^ma¹ + ^mc₂ x^m-1 a² + ……. + ^mc_m x⁰ a^m+1

= ^mc₀x^m+1a⁰ + (^mc₁ + ^mc₀)x^m a¹ + (^mc₂ + ^mc₁) x^m-1 a² + ………… + (^mc_m + ^mc_m-1) x¹a^m + ^mc_m x⁰a^m+1

(x + a)^m+1 = ^m+1c₀ x^m+1a⁰ + ^m+1c¹ x^m a¹ + ^m+1c₂ x^m-1 a² + …….. + ^m+1c_m+1x⁰a^m+1 [∴ ^mc_m = ^m+1c₀ ^mc₁ + ^mc₀ = ^m+1c₁ ^mc₂ + ^mc₁ = ^m+1c₂ ^m+1c_m]

∴ P(m + 1) is true

Conclusion: P(1) is true, P(m) is true

⇒ P(m+1) is true

∴ By principle of mathematical induction the result is true for all natural numbers n.

Notes: 1. The number of terms in the expansion of (x + a)ⁿ is n + 1.

2. The Gen term of binomial expansion is T_r+1 = ⁿc_r x^n-ra^r.

Discussion

4.	State and prove Binomial theorem for positive integral index ‘n’.
Answer» Statement: “If ‘n’ is a +ve integer then (x + a)ⁿ = ⁿc₀ xⁿ a⁰ + ⁿc₁ x^n-1 a¹+ n₂ x^n-2 .a²+ ………….. + ⁿc_n x⁰ aⁿ. Proof : (By Mathematical induction): Let p(n) : (x + a)ⁿ = ⁿc₀x ⁿa⁰+ ⁿc₁ x^n-1 a₁ + ⁿC₂ x^n-2 a² + ……………… + ⁿc_nx⁰aⁿ . Step1 : Prove that P(1) is true when n= 1, L.H.S = (x + a)¹ = x + a; RHS = ¹c⁰ x¹ a¹ = \|x.\| + 1.1.a = x + a L.H.S. = R.H.S. ∴ P(1) is true

4.

State and prove Binomial theorem for positive integral index ‘n’.

Answer»

Statement: “If ‘n’ is a +ve integer then

(x + a)ⁿ = ⁿc₀ xⁿ a⁰ + ⁿc₁ x^n-1 a¹+ n₂ x^n-2 .a²+ ………….. + ⁿc_n x⁰ aⁿ.

Proof : (By Mathematical induction):

Let p(n) : (x + a)ⁿ = ⁿc₀x ⁿa⁰+ ⁿc₁ x^n-1 a₁ + ⁿC₂ x^n-2 a² + ……………… + ⁿc_nx⁰aⁿ .

Step1 : Prove that P(1) is true

when n= 1, L.H.S = (x + a)¹ = x + a; RHS = ¹c⁰ x¹ a¹ = |x.| + 1.1.a = x + a

L.H.S. = R.H.S.

∴ P(1) is true

Discussion

5.	Find the co- ordinate of the foot of the perpendicular from the point (-1,3) to the line 3x – 4y – 16 = 0.
Answer» Let (a, b) be the coordinates of the foot of perpendicular from the point (- 1,3) to the line and slope of the line joining (-1,3) and (a, b) = ( - 3)/(a + 1) Slope of the line 3x – 4y – 16 = 0 is = 3/4 Since two lines are perpendicular (b - 3)/(a + 1) (3/4) = - 1 4a + 3b = 5 ………….. (1) Point (a b) lies on 3x – 4y – 16 = 0 3a – 4b – 16 = 0 …………. (2) Solving (1) & (2), we get a = 68/25 b = 49/25

5.

Find the co- ordinate of the foot of the perpendicular from the point (-1,3) to the line 3x – 4y – 16 = 0.

Answer»

Let (a, b) be the coordinates of the foot of perpendicular from the point (- 1,3) to the line and

slope of the line joining (-1,3) and (a, b) = ( - 3)/(a + 1)

Slope of the line 3x – 4y – 16 = 0 is = 3/4

Since two lines are perpendicular (b - 3)/(a + 1) (3/4) = - 1

4a + 3b = 5 ………….. (1)

Point (a b) lies on 3x – 4y – 16 = 0

3a – 4b – 16 = 0 …………. (2)

Solving (1) & (2), we get a = 68/25 b = 49/25

Discussion

6.	A ball of radius R carries a positive charge with volume density depends only on a distance r from the ball's centre as function p = p0(1-r/R) where p0 is constant. Assuming the dielectric permittivity of the ball and the environment to be equal to unity , find ;(a) the magnitude of the electric field intensity as a function of the distance r both inside and outside the ball(b) the maximum intensity Emax and the corresponding distance rm(c) draw the graphics Thanks a lot.
Answer» Refers to the below link http://bit.ly/2MwcC3t

Discussion

7.	An infinite plate (slab) with permittivity e=1 is uniformly charged with free charge of density p. The thickness of the plate is equal to 2d.Find:(a) the potential as functions of distance x from the middle point of the plate(where the potential is assumed to be equal to zero); having chosen the x coordinate axis perpendicular to the plate(b) draw the approximate graphycs of the potential (a(x))
Answer» Refers to the below link http://bit.ly/2K277Yb

Discussion

8.	All of the following physiologic reactions are involved in the control of bleeding EXCEPT: a) Platelet adhesion reaction b) Platelet release reaction c) Activation of the antifibrinolytic system d) Triggering of the coagulation process
Answer» c) Activation of the antifibrinolytic system

Discussion

9.	Select the drug of granulocyte colony-stimulating factor: a) Filgrastimb) Methotrexate c) Erythropoetind) Doxorubicin
Answer» a) Filgrastim

Discussion

10.	Folic acid is recommended for treatment of megaloblastic anemia. This statement is: a) True b) False
Answer» Folic acid is recommended for treatment of megaloblastic anemia. This statement is True.

Discussion

11.	Tick the drug used in aplastic anemia: a) Fercoven b) Cyanocobalamine c) Epoetin alpha d) Folic acid
Answer» c) Epoetin alpha

Discussion

12.	Consider the following arrangement : If `O_(2)` and `N_(2)` are assumed to behave ideally, then on removing partition `X` (smoothly), then select incorrect option(s) for this process :A. `DeltaS_(says) lt0, DeltaS_(surr) lt 0`B. `DeltaS_(univ) gt 0`C. `DeltaU gt 0, DeltaH gt 0`D. `DeltaG lt 0`
Answer» Correct Answer - A::C `DeltaS_(sys)` is `+ ve` `DeltaS_("surr") = 0, DeltaH = 0, DeltaU = 0` `Delta G = DeltaH - Delta(TS)` `= 0 - TDeltaS` `= - TDeltaS`

Discussion

13.	An autosomal recessive disorder, xanthinuria is due to deficiency of the enzymes: (A) Adenosine deaminase (B) Xanthine oxidase (C) HGPRTase (D) Transaminase
Answer» (B) Xanthine oxidase

Discussion

14.	Select the diuretic that is most effective in acute congestive glaucoma
Answer» Answer: Mannitol

Discussion

15.	Choose the drug which contains cobalt atom:a) Folic acid b) Iron dextran c) Cyanocobalamine d) Ferrous gluconate
Answer» c) Cyanocobalamine

Discussion

16.	An adverse effect of oral iron therapy is: a) Anemia b) Thrombocytopenia c) Headache d) Constipation
Answer» d) Constipation

Discussion

17.	Select the drug used for pernicious anemia: a) Ferrous lactate b) Cyanocobalamin c) Iron dextran d) Ferrous gluconate
Answer» b) Cyanocobalamin

Discussion

18.	Orotic aciduria type II reflects the deficiency of the enzyme: (A) Orotate phosphoribosyl transferase (B) Orotidylate decarboxylase (C) Dihydroorotase (D) Dihydroorotate dehydrogenase
Answer» (B) Orotidylate decarboxylase

Discussion

19.	Tick the drug for parenteral iron therapy: a) Ferrous sulfate b) Fercoven c) Ferrous lactate d) Ferrous fumarate
Answer» (b) Fercoven

Discussion

20.	Which drug does not influence leucopoiesis? a) Filgrastim b) Erythropoetin c) Doxorubicin d) Methotrexate
Answer» b) Erythropoetin

Discussion

21.	All of the following drugs used for iron deficiency anemia EXCEPT: a) Ferrous sulfate b) Folic acid c) Ferrous gluconate d) Ferrous fumarate
Answer» b) Folic acid

Discussion

22.	Iron deficiency anemia leads to pallor, fatigue, dizziness, exertional dyspnea and other symptoms of tissue ischemia. It’s: a) True b) False
Answer» Iron deficiency anemia leads to pallor, fatigue, dizziness, exertional dyspnea and other symptoms of tissue ischemia. It’s True.

Discussion

23.	Choose the drug depressing erythrogenesis: a) Radioactive phosphorus 32 b) Ferrous sulfate c) Molgramostim d) Folic acid
Answer» a) Radioactive phosphorus 32

Discussion

24.	Indicate the drug which increases absorption of iron from intestine: a) Cyanocobalamin b) Folic acid c) Ascorbic acid d) Erythropoetin
Answer» c) Ascorbic acid

Discussion

25.	Following drugs stimulate erythrogenesis EXCEPT: a) Iron dextran b) Vitamine B12 c) Methotrexate d) Folic acid
Answer» c) Methotrexate

Discussion

26.	Pernicious anemia is developed due to deficiency of: a) Erythropoetin b) Vitamin B12 c) Iron d) Vitamin B6
Answer» b) Vitamin B₁₂

Discussion

27.	The applications of the ganglion blockers have disappeared because of all of the following reasons EXCEPT: a) Orthostatic hypotensionb) Lack of selectivityc) Homeostatic reflexes blockd) Respiratory depression
Answer» Answer: Respiratory depression

Discussion

28.	The drugs used for oral administration EXCLUDE: a) Ferrous sulfate b) Fercoven c) Ferrous lactate d) Ferrous fumarate
Answer» (b) Fercoven

Discussion

29.	Orotic aciduria can be controlled by(A) Oral administration of orotic acid (B) Decreasing the dietary intake of orotic acid (C) Decreasing the dietary intake of pyrimidines (D) Oral administration of uridine
Answer» (D) Oral administration of uridine

Discussion

30.	The applications of the ganglion blockers have disappeared because of all of the following reasons EXCEPT: a) Orthostatic hypotensionb) Lack of selectivityc) Homeostatic reflexes blockd) Respiratory depression
Answer» d) Respiratory depression

Discussion

31.	What is hydropic change?
Answer» Hydropic change refers to the accumulation of water in the cell. The accumulation of water in the tubular cells is usually due to hypoxia of the tissue with a resultant decrease in aerobic respiration in the mitochondria and a decreased production ATP. Also note the central hypercellular glomerulus.

Discussion

32.	The nonselectiv Alfa adrenergic blockers produce the following action except:
Answer» Answer: Bradycardia

Discussion

33.	Atropine have binding capacity with which receptor
Answer» Atropine binds to and inhibit muscarinic acetylcholine receptors, producing a wide range of anticholinergic effects.

Discussion

34.	Why does the pH of the mouth change after taking meals? What harm is associated with it andhow can it be overcome?
Answer» The pH of the mouth will change after taking meal due to the following reason: The pH of the mouth will change in accordance with the type of food one consumes. If the food is acidic like lemon, vineger or pickle then the pH of the mouth will become acidic. Also the pH of the mouth changes considerably with every meal that is the pH. The sugar present in the mouth will be broken down by the bacteria present in the mouth. The acidic pH will cause the decay of the calcium of the tooth enamel and will result in cavity if the pH of the mouth becomes lower then 5.5.

34.

Why does the pH of the mouth change after taking meals? What harm is associated with it andhow can it be overcome?

Answer»

The pH of the mouth will change after taking meal due to the following reason:

The pH of the mouth will change in accordance with the type of food one consumes. If the food is acidic like lemon, vineger or pickle then the pH of the mouth will become acidic.
Also the pH of the mouth changes considerably with every meal that is the pH. The sugar present in the mouth will be broken down by the bacteria present in the mouth.
The acidic pH will cause the decay of the calcium of the tooth enamel and will result in cavity if the pH of the mouth becomes lower then 5.5.

Discussion

35.	A) Number of turns B) Number of turns per unit length Explain
Answer» (i) Number of turns in the solenoid: The larger the number of turns in the solenoid, stronger is the magnetic field produced.

Discussion

36.	रक्षी कोलाइड किसे कहते हैं
Answer» रक्षी कोलॉइड-द्रव विरोधी कोलॉइडी विलयन में थोड़ा-सा विद्युत-अपघट्य मिलाने पर उसका स्कंदन शीघ्र ही हो जाता है, परन्तु यदि विद्युत-अपघट्य मिलाने से पहले द्रव विरोधी कोलॉइडों में कोई जल-स्नेही कोलॉइड जैसे -जिलेटिन, अगर-अगर, एल्ब्युमिन आदि की थोड़ी-सी मात्रा मिला दी जाय तो विद्युत-अपघट्य का प्रभाव बहुत कम हो जाता है और स्कंदन बहुत धीमा हो जाता है या बिल्कुल नहीं होता। इस घटना को कोलॉइडी रक्षण कहते हैं तथा रक्षण के लिए मिलाये गए जल-स्नेही कोलॉइड को रक्षी कोलॉइड (Protective colloid) कहते हैं। उदाहरण - किसी सोडियम सॉल में थोड़ा जिलेटिन मिला देने पर सोडियम क्लोराइड विलयन द्वारा उसका स्कंदन नहीं होता।

Discussion

37.	Which cells surround stomata(A) Guard cells (B) Nerve cell(C) Helping cells (D) All of these.
Answer» Guard cells surround stomata.

Discussion

38.	Who is called as the Father of Indian Phycology? (a) M.O. Parthasarathy (b) Y. Bharadwaja (c) V.S. Sundaralingam (d) V. Desikachary
Answer» (a) M.O. Parthasarathy

Discussion

39.	Histone proteins are seen in the DNA of ……………(a) Pseudokaryotes (b) Prokaryotes (c) Mesokaryotes (d) Eukaryotes
Answer» (d) Eukaryotes

Discussion

40.	During respiration process what happened with food material ?(A) Synthesis (B) burning(C) break down (D) none of these
Answer» During respiration process break down with food material.

Discussion

41.	Which of the following plant possess sessile leaves? (a) Hibiscus (b) Mangifera (c) Psidium (d) Gloriosa
Answer» Correct Answer is: (d) Gloriosa

Discussion

42.	Assertion: Ribonuclease and protease are used in Recombinant DNA technology. Reason: RNA and proteins can be removed by treatment with Ribonuclease and protease respectively. a, Both assertion and reason are true, and reason is the correct explanation of assertion. b. Both assertion and reason are true, but reason is not the correct explanation of assertion. c. Assertion is true but reason is false d. Both assertion and reason are false.
Answer» a. Both assertion and reason are true, and reason is the correct explanation of assertion.

Discussion

43.	Which one is the longest part of human digestive system ?(A) Mouth (B) Oesophgus(C) Small intestine (D) Large intestine
Answer» Small intestine is the longest part of human digestive system.

Discussion

44.	Which of the following algae is commonly known as water silk or pond scum of pond silkA. SpirogyraB. UlotrhixC. HydrodictyonD. Chondrus
Answer» Correct Answer - A Spirogyra algae is commonly known as water silk or pond scum of pond silk.

Discussion

45.	Answer the questions In Kunjpura village, located in Karnal district, Haryana, Aditya Aggarwal and his older brother Amit Aggarwal run Tee Cee Industries, a steel plant set up by their ancestors in 1984. Along with this, they also run a gaushala that houses 1,200 cows that can no longer produce milk.The cow shelter was manageable but running the steel plant was turning out to be expensive becau they spent a whopping Rs 5 lakh every month on electricity. The brothers struck upon an idea. Why not run the factory with the biogas produced from cow dung from the shelter and other gaushalas, along with bio and agri led Aditya and Amit to start Amrit Fertilizers, a biogas project, in 2014, without any government support. 1. Biogas is a mixture of the following gases. (a) Ethane, Carbon monoxide, Nitrogen and Butane (b) Methane, Hydrogen, Carbon dioxide and Nitrogen (c) Butane, Carbon monoxide, Propane and Hydrogen (d) Carbon monoxide, Sulphur dioxide and Hydrogen 2. Raw material used in bio gas plant is (a) Animal dung (b) crop residue (c) Food waste (d) All of the above 3. The correct labelling in a biogas plant is given in (a)A- ManureB-slurryC-Gas tankD- Digester(b)A- SlurryB-DigesterC-ManureD- Gas tank(c)A-Gas tankB-Manure C-DigesterD- Slurry(b) A- DigesterB-Gas tank C-SlurryD-Manure4. Biogas is a better fuel than animal dung cake because (i) Biogas has lower calorific value. (ii) Animal dung cake has higher calorific value. (iii) Biogas has high heating capacity. (iv) Biogas burns without smoke. (a) (i) only (b) (ii) only (c) (iii) and (iv) (d) (i) and (ii) 5. Biogas is formed in the (a) presence of air only. (b) presence of water only. (c) absence of air only.(d) presence of water and absence of air.
Answer» 1 : (b) 2: (d) 3: (b) 4: (c) 5: (d)

45.

Answer the questions In Kunjpura village, located in Karnal district, Haryana, Aditya Aggarwal and his older brother Amit Aggarwal run Tee Cee Industries, a steel plant set up by their ancestors in 1984. Along with this, they also run a gaushala that houses 1,200 cows that can no longer produce milk.The cow shelter was manageable but running the steel plant was turning out to be expensive becau they spent a whopping Rs 5 lakh every month on electricity. The brothers struck upon an idea. Why not run the factory with the biogas produced from cow dung from the shelter and other gaushalas, along with bio and agri led Aditya and Amit to start Amrit Fertilizers, a biogas project, in 2014, without any government support. 1. Biogas is a mixture of the following gases. (a) Ethane, Carbon monoxide, Nitrogen and Butane (b) Methane, Hydrogen, Carbon dioxide and Nitrogen (c) Butane, Carbon monoxide, Propane and Hydrogen (d) Carbon monoxide, Sulphur dioxide and Hydrogen 2. Raw material used in bio gas plant is (a) Animal dung (b) crop residue (c) Food waste (d) All of the above 3. The correct labelling in a biogas plant is given in (a)A- ManureB-slurryC-Gas tankD- Digester(b)A- SlurryB-DigesterC-ManureD- Gas tank(c)A-Gas tankB-Manure C-DigesterD- Slurry(b) A- DigesterB-Gas tank C-SlurryD-Manure4. Biogas is a better fuel than animal dung cake because (i) Biogas has lower calorific value. (ii) Animal dung cake has higher calorific value. (iii) Biogas has high heating capacity. (iv) Biogas burns without smoke. (a) (i) only (b) (ii) only (c) (iii) and (iv) (d) (i) and (ii) 5. Biogas is formed in the (a) presence of air only. (b) presence of water only. (c) absence of air only.(d) presence of water and absence of air.

Answer»

1 : (b)

2: (d)

3: (b)

4: (c)

5: (d)

Discussion

46.	Assertion: Eastern Ghats have a greater amphibians species diversity than the western Ghats. Reason: This Amphibian species diversity is due to genetic diversity. a. Both assertion and reason are true, and reason is the correct explanation of assertion. b. Both assertion and reason are true, but reason is not the correct explanation of assertion. c. Assertion is true but reason is false d. Both assertion and reason are false.
Answer» d. Both assertion and reason are false

Discussion

47.	Assertion: Haemophilia is a genetically linked disease. Reason: It is predominantly found in females. a. Both assertion and reason are true, and reason is the correct explanation of assertion. b. Both assertion and reason are true, but reason is not the correct explanation of assertion. c. Assertion is true but reason is falsed. Both assertion and reason are false.
Answer» c. Assertion is true but reason is false.

Discussion

48.	The alloy of copper and zinc is called ?(A) Brass (B) Bronze(C) Solder (D) Steel
Answer» The alloy of copper and zinc is called Brass.

Discussion

49.	Assertion: Ovary is the basal swollen portion of the carpel and it is equivalent to megasporangium. Reason: Ovary matures into a fruit. a. Both assertion and reason are true, and reason is the correct explanation of assertion. b. Both assertion and reason are true, but reason is not the correct explanation of assertion. c. Assertion is true but reason is false d. Both assertion and reason are false.
Answer» b. Both assertion and reason are true, but reason is not the correct explanation of assertion.

Discussion

50.	Which one is not a part of human female unproductive system.(A) Ovary (B) Uterus(C) Sperm (D) Fallopian tube
Answer» Sperm is not a part of human female unproductive system.

Discussion

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