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If a coin is tossed twice, find the probability of getting at least one head. a) 3/4 b) 2/3 c) 1/2 d) 1/4

Option a) 3/4. When two coins are tossed:S=HH,HT,TH,TTThe probability of this is approximately 1/2, so the probability of two in a row is... View Article

Alloxan treatment destroys a) Leydig’s cells b) STH cells c) β- cells of islets of Langerhans d) Sertoli cells

Option c) β- cells of islets of Langerhans. Alloxan is a toxic analogue of glucose that destroys insulin-producing cells of the pancreas which... View Article

FDI refers to a) Fixed Direct Investment b) Foreign Direct Investment c) Future Derivative Investment d) Fixed Deposit Investment

Option b) Foreign Direct Investment. An investment made by a firm or individual in one country into business interests located in another country... View Article

Artificial insemination involves _____________. a) Embryo collection b) Super Ovulation c) Egg collection d) Semen collection

Option d) Semen collection. Artificial insemination is also known as intrauterine insemination (IUI). Here, semen is collected from the male and... View Article

Which part of asafoetida plant is used as food a) Leaf b) Flower c) Root d) Stem

Option c) Root. Ferula asafoetida plant belongs to the Umbelliferae family. Asafoetida is oleo gum resin obtained from the rhizome and root of... View Article

EDTA is a a) Tridentate ligands b) Bidentate ligands c) Hexadentate Ligands d) None of the option

Option c) Hexadentate Ligands. Ligands that have six donor atoms per ligand are known as the Hexadentate Ligands.... View Article

The metal used in solar cells is a) Cesium b) Tin c) Gold d) Sodium

Option a) Cesium. Cesium(Cs) is used in solar cells since it has the lowest ionization enthalpy.... View Article

Who was the first women Governor of a State in free India from the following? (A) Sarojini Naidu (B) Sucheta Kriplani (C) Indira Gandhi (D) Vijayalakshmi Pandit

Sarojini Naidu was the first women Governor of a State in free India. She governed Uttar Pradesh from 15 August 1947 to 2 March 1949. Hence, the... View Article

A dip needle lies initially in the magnetic meridian when it shows an angle of dip θ at a place. The dip circle is rotated through an angle x in the horizontal plane and then it shows an angle of dip θ. Then (tan θ’ / tan θ) is:(a) (1/cos x)(b) (1/sin x)(c) (1/tan x)(d) cos x

In first case In second case We get, Hence, the correct option is (a)... View Article

A set of flip flops integrated together is called __________ (A) Counter (B) Adder (C) Register (D) None of the above

A set of flip flops integrated together is called 'Register' Hence, the correct option is (C)... View Article

Free living nitrogen fixing aerobic bacterium is (A) Rhodospirillum (B) Anabaena (C) Nostoc (D) Beijerinckia (E) Rhizobium

Beijerinckia is a nitrogen fixing aerobic bacteria Hence, the correct option is (D)... View Article

The following observations were taken for determining surface tension T of water by capillary method: diameter of capillary, D = 1.25 x 10^-2 m rise of water, h = 1.45 x 10^-2 m. Using g = 9.80 m/s² and the simplified relation T = [rhg/2] x 10³ N/m, the possible error in surface tension is closest to: (a) 0.15% (b) 1.5% (c) 2.4% (d) 10%

1.5% T = (rhg/2) x 103 N/m T = (Dhg/4) x 103 N/m (Since D = 2r) log T = log D + log h + log g - 4 + 3 ⇒ (ΔT/T) = (ΔD/D) +... View Article

The term bark refers to (A) Phellem, phelloderm and vascular cambium (B) Periderm and secondary xylem (C) Cork cambium and cork (D) Phellogen, phellum, phelloderm and secondary phloem

The term bark refers to Phellogen, phellum, phelloderm and secondary phloem Hence, the correct option is (D)... View Article

Which of the following is a tetrabasic acid (A) Hypophosphorous acid (B) Metaphosphoric acid (C) Pyrophosphoric acid (D) Orthophosphoric acid

Acids having 4 replaceable hydrogen atoms is known as tetrabasic acids Pyrophosphoric acid (H4P2O7) contains four replaceable H-atoms. Hence,... View Article

The process of ore dressing is carried out to (a) remove the silicious materials (b) add flux to the mineral (c) convert the ore to oxide (d) remove the poisonous impurities

Remove the silicious materials The process of ore dressing is carried out to remove the silicious materials Hence, the correct option is (a)... View Article

A lemma is a proven statement used for proving another statement. (A) True (B) False

True A proven statement used for proving other statements is called a lemma So, the correct option is (A)... View Article

A compound formed by elements A and B has cubic structure in which A atoms are at the corners of the cube and B atoms are at the face centres. The formula of the compound will be ___________. (a) A₄B₃ (b) A₂B (c) AB₃ (d) A₂B₃

AB3 Number of atoms A present per unit cell = (1/8) x 8 = 1 Number of atoms B present per unit cell = 6 x (1/2) = 3 So, ratio of A:B = 1:3... View Article

A large sleeping room with many beds (A) Bedroom (B) Dormitory (C) Hostel (D) Basement

Dormitory A large bedroom for a number of people in an institution or school is called as dormitory Therefore, the correct option is (B)... View Article

Salary received by the manager of an agricultural farm is (A) agricultural income (B) salary income (C) business income (D) capital income

Salary received by the manager of agricultural farm is 'salary income'. Therefore, the correct option is (B)... View Article

Which of the following diffuses fastest and which the slowest? Solid, Liquid and Gas. Give reasons for your answer.

Solids diffuse the slowest as the particles in solids do not move from their fixed positions. Gases diffuse the fastest as the particles in... View Article

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