A pendulum oscillates 40 times in 4 seconds. Find its time period and frequency.
Time period is defined as the time required to complete one oscillation. Frequency is defined as the number of oscillations... View Article
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Fill in the blank: ________ forest in gujarat is the home ______________.
Gir forest in Gujarat is the home of Asiatic Lions.
Moon has no atmosphere because (a) It is far away from the surface of the earth (b) Its surface temperature is 100C (c) the rms velocity of all the gas molecules is more than the escape velocity of the moon’s surface (d) the escape velocity of the moon’s surface is more than the rms velocity of all molecules
The escape velocity of the moon is very much less than the root mean square velocity of the moon. Therefore,... View Article
When did she leave home for Delhi and why?
Santosh left home for Delhi when she turned sixteen to pursue higher education. She was under pressure to get married... View Article
What is the pitch of a screw gauge?
Pitch of the screw gauge is defined as the distance moved by the spindle per revolution which is measured by... View Article
A gas is allowed to expand in a well insulated container against constant external pressure of 2.5 atm from an initial volume of 2.50 L to a final volume of 4.50 L. The change in internal energy Δ U of the gas in joules will be: (A) +505 J (B) +1136.25 J (C) -500 J (D) -505 J
We know that, Change in the internal energy is given by the following expression ΔU = q + W where... View Article
Antibodies present in colostrum which protect the new born from certain diseases is of (A) IgG type (B) IgA type (C) IgD type (D) IgE type
Antibodies present in colostrum is IgA which is also called as secretory immunoglobulin. It is present in the mucosal lining... View Article
Which of the following is a nitrogen fixing organism? (A) Aspergillus (B) Rhizobium (C) Both A and B (D) None of the above
Nitrogen Fixation is a biological process in which the nitrogen gas is converted into a usable form for plants and... View Article
Analogue of mass in rotational motion is (a) Moment of inertia (b) Angular momentum (c) Gyration (d) None of these
Analogue of mass in rotational motion is ‘moment of inertia’. Therefore, the correct option is (a)
Draw the structure of BF3
The hybridization of BF3 is sp2 and hence the geometry is trigonal planar. The structure of BF3 is shown below
The international war tribunal was set up in ___________ (a) Vienna (b) Munich (c) Nuremberg (d) Auschwitz
The international war tribunal was set up in Nuremberg At the end of World war II, the international war tribunal... View Article
Two Polaroids P1 and P2 are placed with their axis perpendicular to each other. Unpolarised light I0 is incident on P1. A third polaroid P3 is kept in between P1 and P2 such that its axis makes an angle 450 with that P1. The intensity of transmitted light through P2 is: (A) I0/16 (B) I0/2 (C) I0/4 (D) I0/8
Initial intensity = I0 After P1 —> I1 = I0/2 After P3 —> I2 = I1cos2450 I2 = I0/2 x... View Article
The revolt of 1857 in Awadh and Lucknow was led by (a) Wajid Ali Shah (b) Begum Hazrat Mahal (c) Asaf-ud-daula (d) Begum Zeenat Mahal
The revolt of 1857 in Awadh and Lucknow was led by ‘Begum Hazrat Mahal’. Therefore, the correct option is (b)
Find the sum of even numbers between 11 and 51 (A) 600 (B) 610 (C) 620 (D) 630
The sum of first n terms of arithmetic series formula is given by Sn = n/2 [2a + (n –... View Article
The art of making maps is called (a) scaling (b) sketch (c) cartography (d) contouring
Cartography is the art and science of making maps and charts. Hence, the correct option is (c)
Which of the following is the strongest oxidising agent? (a) Ozone (b) Oxygen (c) Fluorine (d) Chlorine
The strongest oxidising agent is ‘Fluorine’ Fluorine is the most electronegative element since electronegativity decreases on moving down the group.... View Article
Who was the first Indian woman who crossed English Channel? (a) Bhakti Sharma (b) Arati Saha (c) Shikha Tandon (d) Bula Chaudhury
Arati Saha was born in Calcutta, West Bengal. At the early age of four, she was initiated in swimming. Her... View Article
She wrote a letter. Change into negative.
She didn’t write a letter.
Are flippers of penguin and dolphin homologous or analogous? What type of evolution has brought such a similarity in them?
Yes, flippers of penguin and dolphin homologous or analogous. Convergent evolution has brought such a similarity in them.
Who wrote godan? Change into passive voice
Passive voice: Godan was written by whom?
