Recent questions tagged easy

A conductor having a cavity is given a positive charge. What are field strengths $E_A,E_B$ and $E_C$ at point A (inside the cavity), B (with in conductor but outside cavity ) and C (outside the conductor ) respectively ?

asked Jan 8, 2014 by meena.p

1 answer

Choose the correct option : If the point charge is located inside a spherical gaussian surface away from its centre.

asked Jan 8, 2014 by meena.p

1 answer

10 mole of $SO_2$ and 15 mole of $O_2$ were passed over catalyst to produce 8 mole of $SO_3$.The ratio of $SO_2$ and $SO_3$ moles in mixture is

asked Jan 8, 2014 by sreemathi.v

1 answer

A charge q is placed at centre of cube of side l. The electric flux through one face of cube will be :

asked Jan 8, 2014 by meena.p

1 answer

How many moles of $KI$ are needed to produce 0.4moles of $K_2HgI_4$?

asked Jan 8, 2014 by sreemathi.v

1 answer

The mass of carbon anode consumed(giving only carbon dioxide) in the production of 270Kg of aluminum metal from bauxite by the Hall's process is

asked Jan 8, 2014 by sreemathi.v

1 answer

Which of following is a secondary standard

asked Jan 8, 2014 by sreemathi.v

1 answer

Number of $K^+$ ions present in one litre of M/5 $KMnO_4$ solution are :

asked Jan 8, 2014 by sreemathi.v

1 answer

A charge Q and another charge q are placed at two points A and B which are distance l apart. Keeping q stationary at B, Q is moved to point C such that ABC forms equilateral triangle of side l. Find the net work done ?

asked Jan 8, 2014 by meena.p

1 answer

$4I^-+Hg^{2+}\rightarrow HgI_4^{2-}$;1 mole each of $Hg^{2+}$ and $I^-$ will form _________ mole $HgI_4^{2-}$

asked Jan 8, 2014 by sreemathi.v

1 answer

A hollow conducting sphere of radius R has a charge $+Q$ as its outer surface. Inside the sphere at $r= \large\frac{R}{4}$ from its centre the value of electric potential will be :

asked Jan 8, 2014 by meena.p

1 answer

Three charges Q, +q ans +q are placed at vertices of equilateral triangle. If total electric potential energy of system is zero, the value of Q will be :

asked Jan 8, 2014 by meena.p

1 answer

Charges +q and -q are placed on vertices B and C of isosceles triangle. The potential at vertex A is :

asked Jan 8, 2014 by meena.p

1 answer

The equation of the plane which makes double the intercepts of the plane $3x+6y-z+12=0$ is ?

asked Jan 7, 2014 by rvidyagovindarajan_1

1 answer

In a rt. angled triangle $ABC$ if hypotenuse, $AB=p$, then $\overrightarrow {AB}.\overrightarrow {AC}+\overrightarrow {BC}.\overrightarrow {BA}+\overrightarrow {CA}.\overrightarrow {CB}$= ?

asked Jan 7, 2014 by rvidyagovindarajan_1

1 answer

If $\overrightarrow a=\hat i+\hat j+\hat k,\:\:\overrightarrow c=\hat j-\hat k$ and $\overrightarrow b$ is such that $\overrightarrow a\times\overrightarrow b=\overrightarrow c\:\:and\:\:\overrightarrow a.\overrightarrow b=3$ then $\overrightarrow b=?$

asked Jan 7, 2014 by rvidyagovindarajan_1

1 answer

The probability that a number selected at random from the set of numbers { 1,2,3,.....100} is a cube is

asked Jan 6, 2014 by thanvigandhi_1

1 answer

If $E_e$ be the electric field strength of a short dipole at a point on the equitorial line and $ E_a$ be that on axial line at same distance then :

asked Jan 6, 2014 by meena.p

1 answer

16 dipoles of charge of magnitude e are placed inside a cube. The total electric flux coming out of the cube will be :

asked Jan 6, 2014 by meena.p

1 answer

An alpha particle is accelerated by a potential difference of $10^7 V$. Its kinetic energy will be

asked Jan 6, 2014 by meena.p

1 answer

A $20 \mu F$ capacitor and $ 40 \; \mu F$ capacitor are connected in series across $400\; V$ supply line. The charged capacitors are then disconnected from the line and reconnected with their positive plates together and negative plates together. No external voltage is applied. What is potential difference across each capacitor .

asked Jan 6, 2014 by meena.p

1 answer

If $\overrightarrow a,\overrightarrow b,\overrightarrow c$ are any three vectors such that $\overrightarrow a=\overrightarrow b+\overrightarrow c$ and $\overrightarrow b$ is $\perp$ to $\overrightarrow c$, then ?

asked Jan 6, 2014 by rvidyagovindarajan_1

1 answer

If S is a sample space $P(A) = \large\frac{1}{3} P(B)\: and \: S = A \cup B$ where A,B are two mutually exclusive events, then $P(A)=$

asked Jan 6, 2014 by thanvigandhi_1

1 answer

A tetrahedron has vertices $O(0,0,0),\:A(1,2,1)\:B(2,1,3)\:C(-1,1,2)$. The angle between the faces $OAB$ and $ABC$ is ?

asked Jan 6, 2014 by rvidyagovindarajan_1

1 answer

Choose incorrect statement : When two identical capacitors are charged individually to different potential, and connected to each other after disconnecting them from source .

asked Jan 6, 2014 by meena.p

1 answer

An uncharged capacitor is connected to a battery. On charging the capacitor :

asked Jan 6, 2014 by meena.p

1 answer

Let P be the probability of happening any event and Q its failure, then the total chance of $ r$ success in $n$ trials is

asked Jan 6, 2014 by thanvigandhi_1

1 answer

The probability that a non - leap year has 53 sundays is

asked Jan 6, 2014 by thanvigandhi_1

1 answer

A capacitor is charged to $3200 V$ and then connected across a resistor of resistance R. If after 1 s potential difference across capacitor is 2400 V, What will be the potential difference across after 2 and 3 seconds .

asked Jan 6, 2014 by meena.p

1 answer

The chance of throwing a total of 3 or 5 or 11 wih two dice is

asked Jan 6, 2014 by thanvigandhi_1

1 answer

In testis: 1. The immature male germ cells are called spermatogonia (sing. spermatogonium). 2. Spermatogonia produce sperms by spermatogenesis. 3. Spermatogenesis begins at puberty. Regarding 1,2 and 3 :

asked Jan 6, 2014 by pady_1

1 answer

1. The *** is the male external genitalia 2. It is made up of special tissue that helps in erection of the * 3. Erection of the *** facilitates insemination. Regarding 1,2 and 3 :

asked Jan 6, 2014 by pady_1

2 answers

1. The urethra originates from the urinary bladder 2. It extends through the ***** to its external opening 3. Its external opening called urethral meatus. Regarding 1,2 and 3 :

asked Jan 6, 2014 by pady_1

1 answer

In testes : 1. Each seminiferous tubule is lined on its inside by two types of cells called male germ cells and Sertoli cells. 2. Sertoli cells undergo meiotic divisions finally leading to sperm formation. 3. The male germ cells provide nutrition to the germ cells. Regarding 1,2 and 3 :

asked Jan 6, 2014 by pady_1

1 answer

Two equal and opposite charges $ 8 \times 10^{-8} C$ are placed $ 2 \times 10^{-2} $ cm away from a dipole . If this dipole is placed in an external electric field $2 \times 10^8 N/C$. the value of maximum torque and work done in rotating through $180^{\circ}$ will be :

asked Jan 6, 2014 by meena.p

1 answer

1. Bacteria show a range in the number and arrangement of flagella. 2. Bacterial flagellum is composed of three parts – filament, hook and basal body. 3. The filament is the longest portion and extends from the cell surface to the outside. Regarding 1,2 and 3:

asked Jan 6, 2014 by pady_1

1 answer

1. Nucleus is a dense membrane bound structure. 2. Nucleus contains the chromosomes 3. Chromosomes in turn contain the genetic material, DNA. Regarding 1,2 and 3:

asked Jan 6, 2014 by pady_1

1 answer

1. The onion cell is a typical plant cell 2. It has a distinct cell wall as its outer boundary 3. Cell wall is just within the cell membrane. 4. The cells of the human cheek have an outer membrane as the delimiting structure of the cell. Regarding 1,2,3 and 4:

asked Jan 6, 2014 by pady_1

1 answer

CELL THEORY : 1. Rudolf Virchow first explained that cells divided 2. He explained that new cells are formed from pre-existing cells (Omnis cellula-e cellula). 3. He modified the hypothesis of Schleiden and Schwann to give the cell theory a final shape. Regarding 1,2 and 3:

asked Jan 6, 2014 by pady_1

1 answer

Class – Mammalia : 1. Heart is four- chambered. 2. Respiration is by lungs. 3. They are poikilothermous. Regarding 1,2 and 3:

asked Jan 6, 2014 by pady_1

1 answer

Class – Aves : 1. Sexes are separate. 2. Fertilisation is external. 3. They are oviparous 4. Development is direct. Regarding 1,2,3 and 4:

asked Jan 6, 2014 by pady_1

1 answer

Class – Aves : 1. The characteristic features of Aves are the presence of feathers 2. Most of them can fly 3.Ostrich is one of the flightless birds. Regarding 1,2 and 3:

asked Jan 6, 2014 by pady_1

1 answer

Region surrounding electric dipole

asked Jan 6, 2014 by meena.p

1 answer

1. In Urochordata, notochord is present only in larval tail. 2. In Cephalochordata,notochord extends from head to tail region 3. In Cephalochordata,notochord is persistent throughout their life. Regarding 1,2 and 3:

asked Jan 6, 2014 by pady_1

1 answer

1. Hemichordata was considered as a sub-phylum under phylum Chordata earlier. 2. Now it is placed as a separate phylum under non-chordata. 3. This phylum consists of a small group of worm-like marine animals. Regarding 1,2 and 3 :

asked Jan 6, 2014 by pady_1

1 answer

Regarding Aschelminthes: 1. Alimentary canal is incomplete 2. They a well- developed muscular pharynx. 3. An excretory tube removes body wastes from the body cavity through the excretory pore. Regarding 1,2 and 3:

asked Jan 6, 2014 by pady_1

1 answer

The capacitance of parallel plate capacitor does not depend upon

asked Jan 6, 2014 by meena.p

3 answers

Regarding 1,2 and 3: 1. Life cycle of plants has two distinct phases 2. The diploid gametophytic phase and the haploid sporophytic phase - that alternate with each other. 3. This phenomenon is called alternation of generation.

asked Jan 6, 2014 by pady_1

1 answer

If a charge q is rotated around charge Q in a circle of radius y by $90^{\circ}$, the work done will be

asked Jan 6, 2014 by meena.p

1 answer

A and B are two events such that $ P(A) > 0, P(B) \neq 1$ then $ P( \overline A / \overline B )=$

asked Jan 6, 2014 by thanvigandhi_1

1 answer

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