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If A Line Intersects Two Concentric Circles (Circles With The Same Centre) With Centre O At A, B,C And D, Prove That Ab=Cd

Given: Two Concentric Circles With Centre O and A-Line Intersects Two Concentric Circles at A, B, C, D We know that OA = OD and OB = OC. They... View Article

Rhombic Sulphur Consists Of (A)S4 Rings (B)S8 Rings (C) S8 Chains (D)S2 Molecules

The correct answer is (B)S8 Rings Rhombic sulphur is a crystalline allotropic form of sulphur, which exists as rhombic octahedral crystals.... View Article

Saltatory Conduction Occurs In (A)Myelinated Fibres (B)Non-myelinated Fibres (C)Both (A) And (B) (D)None Of These

The correct answer is (A)Myelinated Fibres Saltatory conduction is the propagation of action potentials, which occurs along myelinated axons... View Article

The Longest Mountain Ranges In The World Is _____________. (A) Alps (B) Andes(C) Pamir (D)Himalayas

The correct answer is (B) Andes The Andes Mountains are the longest continental mountain range globally, which is about 7,000 km long, 200 to... View Article

Which Of The Following Is A Ferrous Alloy (A)Brass (B)Steel (C)Solder (D)Magnalium

The correct answer is (B)Steel Steel is an alloy of iron and carbon, so it is a ferrous alloy. Explore more such questions and answers at... View Article

Dipole Moment Is Shown By (A)Trans-2, 3-dichloro-2-butene (B)1, 4-dichlorobenzene (C)Cis-1, 2-dichloro Ethene (D)Trans-1, 2-dichloroethene

The correct answer is (C) Cis-1, 2-dichloro ethene Explore more such questions and answers at BYJU’S.... View Article

Select The Correct Plural Noun From The Given Singular Form Of The Noun: John Asked Sheila To Do The _____. (Dish)(A)Dish (B)Dishes (C)Both (A) And (B) (D) None Of These

The correct answer is (B)Dishes John asked sheila to do the dishes Explore more such questions and answers at BYJU’S.... View Article

Every Drop Counts Is The Slogan Related To(A)Importance Of Water (B)Importance Of Counting (C)Counting Of Water Drops(D)All Of These

The correct answer is (C) Counting Of Water Drops Every Drop Counts is a slogan related to the importance of water. According to this slogan,... View Article

Decomposers Are (A)Autotrophs (B)Heterotrophs (C)Organotrophs (D)Autoheterotrophs

The correct answer is (B)Heterotrophs Decomposers are heterotrophic organisms as they feed on the dead and decaying matter. Bacteria, fungi and... View Article

Three particles, each of mass M, are situated at the vertices of an equilateral triangle of side ‘a′. The only forces acting on the particles are their mutual gravitational forces. It is desired that each particle moves in a circle while maintaining their original separation ‘a’. The initial velocity that should be given to each particle and the time period of circular motion are, respectively.

The Resultant Gravitational force acting on each particle is: As given in the question, the particles are expected to move in a circle of... View Article

Plancks Constant Has The Dimensions As That Of(A)Power (B)Energy (C) Angular Momentum (D)Linear Momentum

The correct answer is (C) Angular Momentum. Plancks Constant has the dimensions of Angular Momentum. Plank's constant (h) = Angular... View Article

Why Does The Conductor Refer To Valli As Madam

The conductor called Valli ‘madam’ because she behaved like a woman. She declined his help and quickly answered the... View Article

Which Of The Following Spellings Is Correct For ‘a Page At The Beginning Of A Book’? (A)Forword (B)Forworde (C)Foreword(D)Foreward

The correct answer is (D)Foreward Explore more such questions and answers at BYJU’S.... View Article

An electric kettle has two coils when one of these is switched on the water in the kettle boils in 6 min. When the other coil is switched on, the water boils in 3 min. If the two coils are connected in series, the time taken to boil the water in the kettle is

Sol: From Joule's Law of heating: As the amount of heat supplied and applied voltage is the same: When the coils are attached in... View Article

How Many Isomers Are Possible In C4H8? (A)5 (B)4 (C)3 (D)2

The correct answer is (A) 5 There are five isomers with the formula C4H8 But-1-ene or 1-butylene But-2-ene Cyclobutane 2-Methylpropane... View Article

Two Cars Are Moving In The Same Direction With The Same Speed Of 30Km/Hr. They Are Separated By 5Km. What Is The Speed Of A Car Moving In The Opposite Direction If It Meets The Two Cars At An Interval Of 4 Minute

As given in the question: Two cars are moving in the same direction with the same speed be - A and B The third car is C. Let the velocity of C... View Article

What Is Bad Ozone And Good Ozone?

When present on the Earth's surface, ozone is a very poisonous gas. Hence it is called bad ozone. When present in the stratosphere, ozone is very... View Article

A shopkeeper sells a saree at 8% profit and a sweater at a 10% discount, thereby, getting a sum of Rs. 1008. If she had sold the saree at 10% profit and the sweater at an 8% discount, she would have got Rs.1028. Find the cost price of the saree?

Sol: Let Cost Price (CP) of saree Rs x Let Cost Price (CP) of sweater Rs y According to the first condition given in the question: A... View Article

Distinguish Between Biodegradable And Non-biodegradable Substances.

The difference between biodegradable and non-biodegradable substances Biodegradable Substances Non-biodegradable Substances... View Article

The magnifying power of a compound microscope increases when A) The focal length of the objective lens is increased and that of the eyepiece is decreased. B) The focal length of the eyepiece is increased and that of the objective lens is decreased. C) Focal lengths of both objective and eyepiece are increased. D) Focal length of both objective and eyepiece are decreased.

The correct answer is (D). Focal Length Of Both Objective And Eyepiece Are Decreased. The magnifying power of a compound- microscope increases... View Article

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