Physics:Gravitation:1

1. A satellite is revolving around the sun in a circular orbit with uniform velocity v. If the gravitational force suddenly disappears, the velocity of the satellite will be
(a) infinity
(b) 2v
(c) v
(d) zero

2. If the radius of the earth were to shrink by one percent, its mass remaining the same, the acceleration due to gravity on the earth’s surface would
(a) decrease
(b) increase
(c) remains unchanged
(d) none of these

3. A planet has twice the radius but the mean density is 1/4th as compared to earth. What is the ratio of the escape velocity from the earth to that from the planet?
(a) 3 : 1
(b) 1 : 2
(c) 1 : 1
(d) 2 : 1

4. The masses of two planets are in the ratio 1 : 2. Their radii are in the ratio 1 : 2. The acceleration due to gravity on the planets are in the ratio.
(a) 5 : 3
(b) 2 : 1
(c) 3 : 5
(d) 1 : 2

5. What would be the duration of the year if the distance between the earth and the sun gets doubled?
(a) 129 days
(b) 365 days
(c) 730 days
(d) 1032 days  

Answers:

1. c
2. b
3. c
4. d
5. d
 

Questions for November 17, 2013

The liquified element which expands on solidification is
a)Hg
b)Ga
c)Ba
d)Both a and b

Synthesis gas is
(a)CO + H2
(b)CO+N2
(c)H2+CH4
(d)None

Errors/Issues in Zoology MCQs app !!

Report Errors/Issues found in Zoology MCQs app here as comments in the facebook comment box below so that we can improve the app and help you !!

Question posted by user - Subodh Pandey

Which of the following organelle remain absent in amoeba? 

a Endoplasmic Reticulum
b.Golgi Complex
c.Centrosome
d.Mitochondria

Gymnosperms 1

Q.1 Perisperm is
a) outgrowth of the outer integument
b) surviving nucellus in the seed
c) outgrowth of funicles
d) all of these

Q.2 Zooidogamy is exhibited by
a) Cycas
b) Gnetum
c) Pinus
d) Angiosperm 

Q. 3 In gymnosperms pollination is exclusively carried out by
a) insects
b) wind
c) animals
d) water

Q. 4 Gymnosperms differ from angiosperms in:
a) having naked ovules
b) having fruits
c) having seeds
d) none 

Q. 5 Megasporophyll in gymnosperms mean:
a) carpels
b) stamens
c) leaves
d) female cone

Answers and discussions in comments !

Kinetic theory of gas and gas laws

1. A volume V of air saturated with water vapour exerts a pressure P. If the volume is made V/2 isothermally, the final pressure will be

A.  More than 2P

B.   Between P and 2P

C.   2P

D.  P

2. Two identical containers joined by a small pipe initially contain the same gas at pressure p₀ and absolute temperature T₀. One container is now maintained at same temperature while the other is heated to 3T₀. The common pressure of the gas in container will be:

A.  3/2 p₀

B.   2/3 p₀

C.   4/3 p₀

D.  3 p₀

3. If the C_p and C_v are specific heats at constant pressure and constant volume, and for hydrogen gas specific heats C_p-C_v = a; for oxygen gas specific heat C_p-C_v = b. (Units of C_p and C_v are joule/g-K) then the relationship between a and b is

A.  b =a

B.   b= 16a

C.   b = a/16

D.  b=8a

4. A given mass of an ideal gas at pressure P is expanded isothermally to four times the original volume and then compressed adiabatically to its original volume. Assuming γ = 1.5, the new pressure of the gas is

A.  2P

B.   P

C.   4P

D.  P/2

Zoology MCQs app

Awesome MCQs (Multiple Choice Questions) Zoology app for Android !! Practice Zoology on your phones anytime ! anywhere for free. Search "Zoology MCQs" in playstore in your phones.
https://play.google.com/store/apps/details?id=com.pdevszoo.zoologymcq