In a committee, 50 people speak French, 20 speak Spanish and 10 speak both Spanish and French. How many speak at least one of these two languages?
F – the set of people in the committee who speak French S – the set of people in the... View Article
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Solve 8x3/2n – 8x-3/2n = 63.
Put \(\begin{array}{l} \mathrm{x}^{\frac{3}{2 \mathrm{n}}}=\mathrm{t},\\ 8 \mathrm{t}-\frac{8}{\mathrm{t}}=63\\ \Rightarrow 8 \mathrm{t}^{2}-8=63 \mathrm{t}\\ \Rightarrow 8 \mathrm{t}^{2}-63 \mathrm{t}-8=0\\ \Rightarrow 8 \mathrm{t}^{2}-64 \mathrm{t}+\mathrm{t}-8=0\\ \Rightarrow 8... View Article
Write in decimal form: 17 / 8.
17 / 8 = 2.125
The solution of 2 – x < 5 is
2 – x < 5 – 3 < x
Find three consecutive odd numbers whose sum is 219.
Let the odd number be ‘x’. The next two consecutive numbers are x + 2 and x + 4. x... View Article
Differentiate esinx.
Given \(\begin{array}{l}\mathbf{y}=\mathbf{e}^{\sin \mathrm{x}}\\ \text { By using chain rule, }\\ \frac{\mathrm{d} y}{\mathrm{dx}}=\mathrm{e}^{\sin \mathrm{x}} \frac{\mathbf{d} \sin \mathrm{x}}{\mathrm{dx}}\\ \frac{\mathrm{dy}}{\mathrm{dx}}=\mathrm{e}^{\sin \mathrm{x}} \cos \mathrm{x}\end{array}... View Article
If n arithmetic means are inserted between 20 and 80 such that the ratio of first mean to the last means is 1:3, then find the value of n.
a = 20 = first term, l = 80 = last term \(\begin{array}{l}\text { Number of A.M’s} = n\\ \text... View Article
The second maturation division of the mammalian ovum occurs_________. (A) Until after the ovum has been penetrated by a sperm. (B) Until the nucleus of the sperm has fused fith that of the ovum. (C) In the graafian follicle following the first maturation division. (D) Shortly after ovulation before the ovum makes entry into the fallopian tube.
The correct answer is (B) Until The Nucleus Of The Sperm Has Fused With That Of The Ovum. Explore more... View Article
Which Of The Following Is An Analgesic? (A) Novalgin(B) Penicillin(C) Streptomycin(D) Chloromycetin
The correct answer is (A) Novalgin Analgesicrefers to painkillers or a group of drugs used to relieve pain. Novalgin is... View Article
Densities of diamond and graphite are 3.5 and 2.3 g/ml respectively. Increase of pressure on the equilibrium:(A) Has No Effect. (B) Favours Forward Reaction. (C) Favours Backward Reaction. (D) Increases The Reaction Rate
The correct answer is (B) Favours Forward Reaction. The given reaction is C(diamond) ⇌ C(graphite) Density of diamond = 3.5g/mL... View Article
In the chloroplast the stroma lamellae:(A) Have both PS II and NADP reductase enzyme. (B) Lack PS II and have NADP reductase enzyme. (C) Lack NADP reductase enzyme but have PS II. (D) Lack PS II as well as NADP reductase Enzyme
The correct answer is (D) Lack Ps II As Well As NADP Reductase Enzyme In The Chloroplast, the Stroma lamellae... View Article
Ionic Hydrides Are Usually______. (A) Easily Reduced. (B)Good Reducing Agents. (C) Liquid At Room Temperature. (D) All Of These
The correct answer is (B) Good Reducing Agents. Ionic hydrides are usually good reducing agents. Ionic hydride is a hydrogen... View Article
A Typical Nucleosome Contains ______.(A) 100bp Of DNA Helix.(B) 200bp Of DNA Helix.(C) 300bp Of DNA Helix.(D) 400bp Of DNA Helix.
The correct answer is (B) 200bp Of DNA Helix. A nucleosome is the basic structural unit of DNA packaging in... View Article
The Pressure Of A Medium Is Changed From 1.01×105Pa To 1.165×105Pa And Change In Volume Is 10% Keeping The Temperature Constant. The Bulk Modulus Of The Medium Is______.
\(\begin{array}{l} K = \frac{\Delta P}{\Delta V/V} \\ \Rightarrow \frac{(1.165 – 1.01) * 10^{5}}{10/100}\\\Rightarrow 1.65 * 10^{5} pa \end{array} \) Therefore,... View Article
The Age Of Retirement Of The Judges Of High Court Is Years
The present retirement age of High court judges is at 62 years. Explore more such questions and answers at BYJU’S.
In Borax Bead Test Which Of The Following Compounds Is Formed? (A) Triborate(B) Metaborate(C) Orthoborate(D) Tetraborate
The correct answer is (B) Metaborate The borax bead test is a qualitative inorganic analysis, used to test for the... View Article
Name The Reagents Used In The Following Reaction: Butan −2− One To Butan −2−Ol
The reagent which can be used for conversion of Butan-2-one to Butan-2-ol is Ni or H2 or NaBH4 or LiAlH4... View Article
Which Of The Following Is A Conventional Source Of Energy(A) LPG, Petrol, CNG (B) Diesel, Electricity (C) Wood, Dung Cakes, Coal And Kerosene (D) All Of These
The correct answer is (D) All Of These Conventional sources of energy are also known as non-renewable sources of energy.... View Article
Which Of The Following Is Not A Macromolecule? (A) Starch(B) Protein(C) Sucrose(D) Nucleic Acid
The correct answer is (C) Sucrose Sucrose is produced naturally in plants and its molecular formula is C12H22O11. Sucrose is... View Article
The Plant Cell Does Not Have A(A) Vacuoles(B) Plastids(C) Cell Wall(D) Centrioles
The correct answer is (D) Centrioles. The centriole is a cylindrical shaped cell organelle composed of a protein called tubulin.... View Article
