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VVI MCQs Daily Practice Set - 1 (Memory Based Questions of BSc Forestry, AFU 2076)

These Questions are memory Based Question of BSc Forestry, AFU 2076. Practice it and Try to solve these all. Best of Luck. Solutions are available below after questions.

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Questions:-

1. The dimensional formula of coefficient of viscosity is
(A) [MLT-1]
(B) [M-1L2T-2]
(C) [ML-1T -1]
(D) None of these


2. The reciprocal of the time is
(A) Amplitude
(B) Frequency
(C) Wave length
(D) Speed


3. The largest gland in the human body is
(A) Liver
(B) Thyroid
(C) Pituitary
(D) Hypothalamus


4. Energy flow in ecosystem is …….
(A) Bidirectional
(B) Multidirectional
(C) Unidirectional
(D) All around


5. A fully grown tadpole larva of frog respires through
(A) Gills
(B) Skin
(C) Lungs
(D) All of them combinedly


6. Cells which takes part in secondary growth are named as
(A) Phloem
(B) Xylem
(C) Cambium
(D) Medullary Ray


7. Which is the largest Phylum in Invertebrate?
(A) Annelida
(B) Arthropoda
(C) Mollusca
(D) Echinodermata


8. The passive form of 'Who did it?' is
(A) Who was it done?
(B) By whom was it done?
(C) It was done by whom?
(D) Whom was it done?


9. Neither of them …… happy there.
(A) are
(B) have
(C) is
(D) has


10. I prefer tea ……… coffee.
(A) to
(B) against
(C) than
(D) over


11. Acetylene has ……… bond.
(A) 3σ and 3π
(B) 2σ and 3π
(C) 3σ and 2π
(D) 2σ and 2π


12. The amount of oxalic acid crystals required to make 100 ml of decinormal solution is:
(A) 12.6 gm
(B) 1.26 gm
(C) 6.3 gm
(D) 0.63 gm


13. Solubility of A^3B^2 is x. The solubility product will be
(A) 27x^3
(B) 108x^5
(C) 218x^5
(D) 525x^5


14. Gibberellic acid was extracted from:
(A) Fungus
(B) Bacteria
(C) Virus
(D) Insect


15. A coin is tossed and a die is thrown. Find the probability that the outcome will be a head or a number greater than 4.
(A) 1/2
(B) 1/3
(C) 1/6
(D) 2/3


16. The area of ellipse x^2/9 + y^2/16 = 1 is:
(A) 16π
(B) 12π
(C) 9π
(D) 20π


17. The value of (1+i)^20 is
(A) 1024
(B) -1024
(C) 2048
(D) -2048


18. Bengal famine is related to:
(A) Coffee
(B) Rice
(C) Wheat
(D) Potato


19. Which of the following chemical is used in dehorning?
a. KCl
b. KOH
c. NaCl
d. CH3CH2OH


20. Gas used in manufacture of Vanaspati ghee is
a. Nickel
b. Hydrogen
c. Oxygen
d. Carbon dioxide


21. Cycas is
(A) Hermaphrodite
(B) Monoecious
(C) Dioecious
(D) None of them


22. Colostrum is
(A) milk of lactation period
(B) milk of initial few days
(C) milk of initial few hours
(D) milk on day one


23. The world’s largest land animal is __________?
A. Hippopotamus
B. Asian elephant
C. African forest elephant
D. African bush elephant


24. Flame cells are the excretory organs of animals belonging the phylum:
A. Protozoa
B. Porifera
C. Coelenterate
D. Platyhelminthes


25. The self-linking ability of carbon is called
(A) carbonation
(B) sublimation
(C) hydrogenation
(D) catenation

Answers:-

1. C
Dimensional Formula of Coefficient of Viscosity
The dimensional formula of Coefficient of Viscosity is given by,M1 L-1 T-1
Where,
M = Mass
L = Length
T = Time
Derivation

Coefficient of viscosity (η) = F × r × [A × v]-1 . . . . . (1)
Where F = tangential force, r = distance between layers, A = Area, and v = velocity
Since, Tangential Force (F) = Mass × Acceleration = M × [L T-2]
The dimensional formula of force = M1 L1 T-2 . . . . (2)
And, the dimensional formula of area and velocity = L2 and L1 T-1 respectively . . . . (3)

On substituting equation (2) and (3) in equation (1) we get,
Coefficient of viscosity = F × r × [A × v]-1
Or, η = [M L T-2] × [L] × [L2]-1 × [L1 T-1]-1 = [M1 L-1 T-1].
Therefore, the Coefficient of Viscosity is dimensionally represented as [M1 L-1 T-1].


2. B
Frequency is defined as the number of oscillations per second. One complete oscillation of a sound wave is called a Cycle. Hertz simply measures the frequency of the cycle. One Hertz is the equal to one Cycle per second.
Hence, Time period, T = reciprocal of frequency


3. A
Liver is largest gland in the body whereas Thyroid is largest endocrine gland in body.
Liver weighs about 1.5-2 kg. Urea is produced by liver. Glisson's capsule is related with liver. Jaundice and Hepatitis B effects liver. Bile is produced by liver and stored in gall bladder that helps in emulsification of fat. Gall bladder is absent in Horse.


4. C 
The flow of energy in an ecosystem is said to be unidirectional because some energy is lost in form of heat when moving from one trophic level to next for the maintenance of homeostasis of an organism thus each successive trophic level receive a less amount of energy as compared to the preceding trophic level.


5. A
A fully grown tadpole larva of frog respires through gills. Tadpoles breathe through the gills by moving their throat through regular rhythmic movements, known as pulsing. They can also breathe through lungs. When they metamorphose into frogs, they eventually lose their gills and start breathing through the lungs or through the skin.


6. C
Cambium, in plants, is a layer of actively dividing cells between xylem (wood) and phloem (bast) tissues.
It is responsible for the secondary growth of stems and roots (secondary growth occurs after the first season and results in an increase in thickness).
Hence, Cells which takes part in secondary growth are named as Cambium.


7. B
Arthropoda is largest phylum with 9 lakhs species, about 85% of total species of animals. Insects population is about 1.2 million and is the largest class.


8. B


9. C. 
Neither, Either are singular.


10. A
The preposition “to” is use to separate the two things that we are comparing. The thing before the preposition “to” is the thing that we like the most.


11. C
Two pi and three sigma bonds. Among three sigma bonds two are used for holding C and H atoms (sigma bond between sp hybridsed and 1s orbital) and the third one is formed between C and C (sigma bond between two sp hybridised orbitals)
Two pi bonds are orthogonally arranged between two C atoms (pi bonds are formed between two un-hybridised p orbitals belonging to C atoms). C atoms in C2H2 (acetylene) are sp hybridised.


12. D
W=NEV/1000=0.63 ;For E, E=M/2, W=NEV/1000=0.63; For E, E=M/2.


13. B
Ksp=(3x)3.(2x)2 = 108x5.


14. A
It's a natural product extracted from the Gibberella fujikuroi fungus that is found on rice plants. There are many forms of gibberellic acid with GA3 proven to be the most effective. Tomatoes grow larger, taste better (sweeter), produce more per plant and much larger plants.


15. C
Solutions:
Probability of head=1/2
Probability that the number will be greater than 4=2/6=1/3
Probability that outcome is head and number greater than 4=(1/2)(1/3)=1/6


16. B
Here, a2=9 b2=16; Area of ellipse: πab = π.3.4 = 12π.


17. B
Solution: (1+i)^20
= (1+i)^2*10
= [(1+i)^2 ]^10
= (2i)10
= (2^10)(i)^10
= (2^10)*(-1)
= -(2^10)= -1024


18. B
Typically the causes of a famine include supply side shocks including bad harvest, war time supply issues, which inevitably lead to rapid food price inflation. The causes of Bengal famine are much more complex and intertwined than just supply shortage.

In case of Bengal, the primary reason for the famine was shortages in Rice. A variety of factors led to the shortage, but most prominent among them was not supply shortage rather it was due to improper allocation of the available rice stocks. 1943 was a relatively bad year in terms of rice harvest (down 5% year-on-year), but not enough to cause a famine.


19. B
Dehorning paste typically contains two caustic substances: calcium hydroxide and sodium/potassium hydroxide. When applied to the horn bud, the paste causes a chemical burn that destroys horn-producing cells.


20. B
Hydrogen gas is used in the manufacturing of Vanaspati ghee. To prepare the Vanaspati ghee, hydrogen gas is passed through vegetable oils under 8-10 atmospheric pressure in the presence of nickel powder at a temperature of 200°C, oil changes into vegetable ghee or solid fat known as Vanaspati ghee.


21. C
Cycas is dioecious, as male and female cones are present on different plants.


22. B
Colostrum is a milky fluid that's released by mammals that have recently given birth before breast milk production begins. It's an important source of nutrients that promotes growth and fights disease in infants, but it can also be consumed during other phases of life — typically in supplement form.


23. D
The largest land animal in the world is the African Elephant. However, it is not the largest land animal ever. In the earth’s 4 billion year history, there have been animals much larger than an African Elephant. The Argentinosaurs is the largest ever land animal ever discovered. It was a dinosaur that lived 97 million years ago in what is now South America. Fossil evidence indicates Argentinosaurs weighed a colossal 88 metric tons. That is more than 30 African Elephants.
The African bush elephant (Loxodonta africana), also known as the African savanna elephant, is the largest living terrestrial animal, with bulls reaching a shoulder height of up to 3.96 m (13.0 ft) and a body mass of up to 10.4 T.


24. D
A flame cell is a specialized excretory cell found in the simplest freshwater invertebrates, including flatworms, rotifers and nemerteans; these are the simplest animals to have a dedicated excretory system. Flame cells function like a kidney, removing waste materials. Bundles of flame cells are called protonephridia.


25. D
Catenation occurs most readily with carbon, which forms covalent bonds with other carbon atoms to form longer chains and structures. This is the reason for the presence of the vast number of organic compounds in nature.
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