ECAT and MCAT Preparation: Post your doubts here!

[HIMYM forever!!]

Just to confirm: This thread can be used to discuss entry tests for NUST and GIKI, right? Btw ECAT is only to apply for UET, right?

Ecat is Engineering College Admission Test. So this thread is for any engineering university whose test you are going to take, including NUST, GIKI etc.

 

[hassam]

Alright. Btw will/have you read (some)topics from FSc books? Also, do you think if there's any need to do Maths questions from first year's book?

well yeah ZISHI.....matrices ....harmonic sequences and harmonic mean.....somewhat set notation....and revision of of all kind of numbers..........most of questiions come from sequences and trigonometry in entry tests from book 1

 

[hassam]

on which oof the following does the final shape of protien depends
a.primary structure
b.quarternary structure
c. both
d. none

in combustion analysis CO2 is absorbed in​

a-mg(ClO4)2​

b-lime water​

c-concentrated H​

2SO​

d-50%KOH ​

Insulin preparation comes under which branch of biology​

a) Social Biology​

b) Biotechnology​

c) Genetic Engineering​

d) Parasitology​

​

Unicellular Plasmodium is studied under the branch of biology called​

a) Microbiology​

b) Cell Biology​

c) Parasitology​

d) Pathology​

​

​

​

​

 

[smzimran]

Alright. Btw will/have you read (some)topics from FSc books? Also, do you think if there's any need to do Maths questions from first year's book?

Yes, i plan to read some chapters from the Fsc books but questions.... No

The ECAT book questions are enough!

 

[smzimran]

Just to confirm: This thread can be used to discuss entry tests for NUST and GIKI, right? Btw ECAT is only to apply for UET, right?

Ofcourse, anything related to entry tests is fine!

 

[alphabravocharlie]

The nucleus of an atom always:
a) contains neutrons
b) contains neutrons and electrons
c) contains protons only
d) contains protons and neutrons

Why is it c and not d?

 

[smzimran]

The nucleus of an atom always:
a) contains neutrons
b) contains neutrons and electrons
c) contains protons only
d) contains protons and neutrons

Why is it c and not d?

It must be D
Only nucleus of H+ contains no neutrons, right?

 

[leadingguy]

It must be D
Only nucleus of H+ contains no neutrons, right?

well as far as I know element hydrogen atom has formula H1

so a single electron spinning in its orbital and a single proton in its nucleas no neutron.... so the ans wil be C

 

[leadingguy]

a request ... whatever new things any one encounters (not found in A levels syllabus) please post it here..

as a few days bac hassam did by posting som frmulas from chemistry, fsc..

wel i 2 encountered a new thing....in physics..

STOKe's formula..

it is determined by Stoke to found the viscosity of small spheres in liquid or gas...

the formula is FD = 6.pi.nrv

 

[leadingguy]

the friction btween 2 surfaces depends upon yhe normal frce, it is independatnt of ?????

a) co-officient of kinetic energy
b) co-officient of static friction
c)area f contact between the two surfaces
d)friction

an acceleration of 1 ms-2 by a body of 1 kg is produced by the force of???

a)one pound
b)one newton

quantities which can be specified by a number havng apropriate units(positive negative. zero) are called..
a)scalers
b)vectors??

unit of solid of angle is???


a)steradian
b)radian
c)degree
d)radian-second


CAn any one clearify me these??? as i am too much confused aftr seeing ans. in ECAt book

 

[leadingguy]

hassam

the question which u ahve asked regarding physcs of earths radius

the ans wil be "D"



as f = GMm/r^2

doubling radius wil decrease the force (f) four times

now F= ma
so acceleration wil too decrease four times...


accl. = change in velocity/ time

if acceleration is decreased four times time wil increase by four times..

so time perios wil bee 365 * 4= Option D

hope m not wrong???

 

[leadingguy]

force in kg-wt?????

what does this damn wt doing here????

hw to convrt thsi force into kg ms-2
please help

 

[hassam]

hassam

the question which u ahve asked regarding physcs of earths radius

the ans wil be "D"



as f = GMm/r^2

doubling radius wil decrease the force (f) four times

now F= ma
so acceleration wil too decrease four times...


accl. = change in velocity/ time

if acceleration is decreased four times time wil increase by four times..

so time perios wil bee 365 * 4= Option D

hope m not wrong???

well its B....WAT i used was that kepler law realtion T^2 IS PROPRTIONAL TO R^3

 

[hassam]

WELL one more thing....least counts of instruments according to FSC
metre rule......1mm
vernier caliper.....0.01cm
screw gauge......0.001cm
stopwatch.....0.1s
...say a question comes like....the mass of an object measured to nearest gram is 2000g.....then how many zeros will be significant
u guyx shud knw three systems....
CGS
based on cm grams and sec
FPS
based on foot pound and second
SI
based on derived units base units and supplimetary
supplementary are plane angle and solid angle.....
one more ODD THing according to FSC.....mol and kg are both units for amount of substance....wat wud be current ....vector or scalar....???

 

[hassam]

i cnt solve it.....shud i convert it to row echelon form.....
how.....wats the trick heere

 

[smzimran]

well as far as I know element hydrogen atom has formula H1

so a single electron spinning in its orbital and a single proton in its nucleas no neutron.... so the ans wil be C

C says nucleus contains no neutrons!!!
Read the question

 

[smzimran]

the friction btween 2 surfaces depends upon yhe normal frce, it is independatnt of ?????

a) co-officient of kinetic energy
b) co-officient of static friction
c)area f contact between the two surfaces
d)friction

A

an acceleration of 1 ms-2 by a body of 1 kg is produced by the force of???

a)one pound
b)one newton

B ofcourse
If the book says A , its wrong!

quantities which can be specified by a number havng apropriate units(positive negative. zero) are called..
a)scalers
b)vectors??

B because the sign shows direction

No idea abt the last one!

 

[smzimran]

i cnt solve it.....shud i convert it to row echelon form.....
how.....wats the trick heere

I think you go with the lengthy method but it would become easy as many you dont have to solve further as sson you see a zero as coefficient!!!

 

[smzimran]

I will collect all helpful information people post here and add it to the first post!

So, people dont have to search over!

 

[leadingguy]

C says nucleus contains no neutrons!!!
Read the question

yes no neutrons... as hydrogen atom does not have any neutron but have protons ... an any nucleus shud atleast have a proton...

here the question is asking wat atleast a nucleas contains the most possible aproach wil be a proton... as a nucleas can be complete widout a neutron bt nt wid out a proton... (example hydrogen)