Microeconomics deals with the study of aggregates. True or False.
False, microeconomics deals with prices and production in the market whereas the study of aggregates is the matter of macroeconomics.
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Additive inverse of 10 is:
Additive inverse of 10 is -10.
A thin circular ring of the area A is held perpendicular to a uniform magnetic field of induction B. A small cut is made in the ring and a galvanometer is connected across the ends such that the total resistance of the circuit is R. When the ring suddenly squeezed to zero areas, the charge flowing through the galvanometer is: A) BR/A B) (AB)/R C) ABR D) E2A/R2 E) None
Answer: B) (AB)/R As we know, Q = It Now, I = induced EMF/R EMF = (-0-BA)/t I = BA/Rt... View Article
Two trains travelling on the same track are approaching each other with equal speed of 40ms^−1 . The drivers of the trains begin to decelerate simultaneously when just 2.0km apart. Assuming the decelerations to be uniform and equal, the value to the deceleration to barely avoid collision should be A. 11.8ms^−2 B. 11.0ms^−2 C. 2.1ms^−2 D. 0.8ms^−2
Answer: D. 0.8ms−2 Given, initial speed, u = 40 m/s Distance to be covered by each train, s = 1km... View Article
Name the enzyme present in tears which prevents eye infections.
Lysozyme is the enzyme present in tears which prevents eye infections.
Two substances of densities ρ1 and ρ2 are mixed in equal volume and the relative density of mixture is 4. When they are mixed in equal masses, the relative density of the mixture is 3. The value of ρ1 and ρ2 are: A. ρ1=6;ρ2=2 B. ρ1=3;ρ2=5 C. ρ1=12;ρ2=4 D. None of these
Answer: A. ρ1=6;ρ2=2 Explanation: When the substances are mixed in equal volume, then the density will be: (ρ1+ρ2)/2 = 4... View Article
Which scheme for animal protection was launched in 1973? A. Project Deer B. Project Chital C. Project Tiger D. None of these
Answer: C. Project Tiger
Which of the following relation is not correct? A. Equivalent conductivity: Scm^2eq^−1 B. Conductance: ohm^−1 C. Specific conductance: S cm D. Cell constant: cm^−1
Answer: C. Specific conductance: S cm
The surface tension of which of the following liquid is maximum: A. C2H5OH B. CH3OH C. H2O D. C6H6
Answer: C. H2O
A photosynthetic organism which does not release oxygen is: A. Blue-green alga B. Green sulphur bacterium C. Green alga D. Algal component of lichen.
Answer: B. Green sulphur bacterium
Which of the following is solid? A. Fluorine B. Bromine C. Iodine D. Chlorine
Answer: C. Iodine
There are exactly two points on the ellipse x^2/(a^2)+y^2/(b^2)=1 whose distance from its centre is same and equal to (1/sqrt2)(sqrt(a^2+2b^2)). The eccentricity of the ellipse is: A. 1/2 B. 1/√2 C. 3√2 D.1/3√2
Answer: B. 1/√2 As per the given condition, a = √[(a2 +2b2)/√2] Squareing both the sides we get; a2 = 2b2 b2/a2... View Article
Five bells begin to toll together and toll respectively at intervals of 6, 5, 7, 10 and 12 seconds. How many times will they toll together in one hour excluding the one at the start ? A. 7 times B. 8 times C. 9 times D. 11 times
To toll together we need to take the LCM of each seconds of bell. L.C.M. of 6, 5, 7, 10... View Article
The coagulation of 200 mL of a positive colloid took place when 0.73 g HCl was added to it without changing the volume much. The flocculation value of HCl for the colloid is: A: 100 B: 36.5 C: 0.365 D: 150
200mL of the solution requires 0.73gHCl Moles of HCl = 0.73/36.5 mol = 0.02mol or 20.0m mol Hence, 1L or... View Article
Calculate oxidation number of central atom in FeCO5.
( Charge onFe) +5(Charge on CO)=0 ( Charge on Fe) +5(0)=0 ( Charge on Fe)=0 Hence, the oxidation number of Fe... View Article
One who does not care for literature or art: A. Barbarian B. Philistine C. Illiterate D. Primitive
Answer: B. Philistine
Two organisms live in close association with each other such as one is benefited and the other is neither benefited nor harmed. Which of the following terms best describes this relationship? A. parasitism B. mutualism C. tautomerism D. commensalism
Answer: D. commensalism
The maximum peak-to-peak voltage of an AM wave is 16mV, and the minimum peak-to-peak voltage is 4mV. The modulation factor is equal to A. 0.6 B. 0.3 C. 0.8 D. 0.25
Answer: A. 0.6 Maximum voltage, Emax = 16/2 = 8mV Minimum voltage, Emin = 4/2 = 2mV Modulation factor, μ =... View Article
A transformer is employed to: A. obtain a suitable dc voltage B. convert dc into ac C. obtain a suitable ac voltage D. convert ac into dc
Answer: C. obtain a suitable ac voltage
Teflon, Styron and neoprene are all _______________. A.Co-polymers B.Monomers C.Homopolymers D.Condensation polymers
Answer: C.Homopolymers
