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সকল বিষয়

π
π/2
π /4
π /8
π /3
অপবর্তন ঘটে
সাতটি রঙে বিভক্ত হয়
বিভিন্ন রঙে বিভক্ত হয় না
সম্পূর্ণভাবে শোষিত
পূর্ণঅভ্যন্তরীন প্রতিফলন ঘটে
5.57×10⁻ ¹¹NC⁻¹
4.67×10⁻ ¹²NC⁻¹
6.51×10⁻ ¹²NC⁻¹
5.57×10 ¹¹NC⁻²
5.57×10⁻ ¹⁰NC⁻²
C, O, N
C, S, N
C, P, O
C, N, P
S, N, F
Created: 3 months ago | Updated: 18 hours ago
Ti
Fe
Mn
CO
Zn
মৌলের পারমাণবিক সংখ্যা , ভর সংখ্যা ও আইসোটোপের সংখ্যা বুঝায়
পরমাণুতে ইলেকট্রনের আকৃতি , প্রোটনের আকৃতি এবং নিউট্রনের আকৃতি বুঝায়
পরমাণুতে অরবিটালের আকার , আকৃতি ও ত্রিমাত্রিক বিন্যাস বুঝায়
পরমাণুতে ইলেক্ট্রন সংখ্যা , প্রোটন সংখ্যা ও নিউটন সংখ্যা বুঝায়
হাইড্রোজেন মৌলের বর্ণালীর বামার সিরিজ, লাইম্যান সিরিজ ও ব্রাকেট সিরিজ বুঝায়
1,3 - বিউটাডাইন ও 1, 4 - পেন্টাডাইন
বেনজিন ও 1,2 বিউটাডাইন
বেনজিন ও 1,4 পেন্টাডাইন
1 - পেন্টিন ও 2 - বিউটিন
বেনজিন ও 2 - বিউটিন
Sc, Pb
Fe, Pb
Fe, Co
Pb, Sb
Pb, Co
Created: 9 months ago | Updated: 17 hours ago
(-∞, 0)
(0, ∞)
(-∞,0) ∪ (0, ∞)
(1, ∞)
(-∞, ∞)
p²-q²
q²-p²
p²+q²
p²+2q²
q²+2p²
(0, 0)
(1, 1/2)
(-1/2, 1)
(1/2, 1/2)
(1√2, 1√2)
Created: 9 months ago | Updated: 21 hours ago
B
1/b
AB
1
-1
1
-2
2
-10
১০
5/2
-14
14
Created: 9 months ago | Updated: 18 hours ago
(e²-1)√a
(e²-1)/a
(e²-1)
(1-e²)√a
1a(e2-1)
Created: 9 months ago | Updated: 1 day ago
-π/4
-π/2
π/4
π/2
-3√3
√ (3/2)
√ 3
3√3
5√3
Created: 9 months ago | Updated: 2 weeks ago
romantic
irritated
exited
frightened
nervous
-CH3,-Cl
 -CH3,-NO2
   -NH2,-Cl 
       -CH3,-NH2 
-NH2,-NO2
বেনজয়িক এসিড, সোডিয়াম বেনজয়েট , বেনজিন
বেনজয়িক এসিড , ফেনল, বেনজিন
ফেনল, বেনজয়িক এসিড, বেনজিন
বেনজালডিহাইড, বেনজয়িক এসিড , বেনজিন
বেনজয়িক এসিড, ফেনল, বেনজিন
n - হেপ্টানল, মিথাইল সাইক্লোহেক্সেন ও বেনজিন
হেপ্টিন-1 , মিথাইল সাইক্লোহেক্সেন , টলুইন
বেনজিন, টলুইন, জাইলিন
সাইক্লোহেপ্টেন, সাইক্লোহেক্সেন , টলুইন
1,3 -হেপ্টিন, সাইক্লোহেপ্টেন , জাইলিন
নিম্ন তাপমাত্রা ও নিম্নচাপ
উচ্চ তাপমাত্রা ও উচ্চচাপ
নিম্ন তাপমাত্রা ও যে কোন চাপ
উচ্চ তাপমাত্রা ও নিম্নচাপ
নিম্ন তাপমাত্রা ও উচ্চচাপ
এটি একটি আয়নিক বিক্রিয়া
বিক্রিয়া শেষে দ্রবণটি তড়িৎ পরিবাহিতা হ্রাস পায়
বিক্রিয়া শেষে দ্রবনটির তড়িৎ পরিবাহিতা হ্রাস পায়
বিক্রিয়ার ফলে দ্রবণের তাপমাত্রা বৃদ্ধি পায়
বিক্রিয়া শেষে ফেনলফথেলিন যোগ করলে দ্রবণটি গোলাপী বর্ণ ধারণ করে
   Ca(OH)2
    Ca(HCO3)2
CO32- 
      [Ca(H2O)6]2+ 
CaO 
গ্রুপ - II এবং অম্লীয় অক্সাইড
গ্রুপ II এবং ক্ষারীয় অক্সাইড
গ্রুপ I এবং অম্লীয় অক্সাইড
গ্রুপ - IV এবং ক্ষারীয় অক্সাইড
গ্রুপ IV এবং অম্লীয় অক্সাইড
Created: 9 months ago | Updated: 1 month ago
was always there
is no longer there
is more today than ever before
will always be there
Created: 9 months ago | Updated: 22 hours ago
mentality
cultural heritage
gross ignorance
socio-political conditions
Created: 9 months ago | Updated: 1 week ago
read the story of other nations
have a better understanding of other nations
not react to other actions
have vital contacts with other nations
Created: 9 months ago | Updated: 22 hours ago
us
themselves
others
each others
Pollution and degradation of the environment is, according to the commission's report, a matter of universal concer.
Pollution and degradation of the environment is, according to the report by the commission, a matter of universal concern.
Pollution and degradation of the environment are, according to report of the commission, matters of universal concer.
Pollution and degradation of the environment are, according to the commission's report, a matter of universal concern.
Denim jeans were originally worn not so much aas a fashion statement as for their being practical work clothes.
Denim jeans were originally worn not so much as a fashion statement but for their being practical work clothes.
Denim jeans were originally worn not so much as a fashion stement but for being practical work clothes.
Denim jeans were originally worn not as a fashion statement as for them being practical work clothes.
Your taking a loan to buy a car annoyed Father.
Your taking a loan to buy a car aggravated Father.
You taking a loan to buy a car irritated Father.
You taking a loan to buy a car annoyed Father.
It ought to be her with whom you share your secrets, not me
It ought to be her with whom you share your secrets, not I.
It ought to be she with whom you share your secrets, not me.
It ought to be she with whom you share your secrets, not I.
A conjunction is used to connect words and sentences together.
A conjunction is used to connect words or sentences together.
A conjunction is used to connect words and sentences.
A conjunction is used to connect words or sentences.
Created: 9 months ago | Updated: 1 week ago
Between you and I, I doubt that he will come.
Between you and I, I doubt that he would come.
Between you and me, I doubt that he will come.
Between you and me, I doubt that he would come.
Created: 9 months ago | Updated: 2 weeks ago
Being abandoned by our friends is the cause of great sorrow for us.
Our being abandoned by our friends is the cause of great sorrow.
Abandoned by our friends, sorrow is the result.
We feel great sorrow when our friends abandon us.
as though she were a licensed practitioner.
as though she was a licensed practitioner.
like she was a licensed practitioner.
like as if she was a licensed practitioner.
that these forms should be submitted.
that these forms be submitted
for these forms to be submitted
these forms submission
Created: 9 months ago | Updated: 1 week ago
. Work that is not finished is not work all, it is merely a botch, a failure
Work that is not finished is not work all, it is a botch merely, and a failure.
Work that is not finished is not work all; it is merely a botch, a failure.
Work that is not finished is not work all; the work mercely is a botch and a failure.
Created: 9 months ago | Updated: 1 day ago
The land is belonged to an old lady.
They parted from one another suddenly.
The leader expressed himself forcibly.
Mother bought me an ice-cream.
Created: 3 months ago | Updated: 9 hours ago
This opinion different from mine
This opinion is differ from mine
This opinion differs from mine
This opinion is different from my.
Created: 9 months ago | Updated: 9 hours ago
This is an unique case.
This is a unique case.
This is a very unique case.
This is the most unique case.
Created: 9 months ago | Updated: 9 hours ago
The setting of a short story affects it's plot.
The setting of a short story affects its plot.
The setting of a short story effect its plot.
The setting of a short story effects its plot.
Created: 9 months ago | Updated: 2 days ago
The country has adopted a new industrial policy.
The country has adapted an new industrial policy.
The country has effected the new industrial po
The country has affected new industrial policy.
Created: 9 months ago | Updated: 1 day ago
persevere:Waiver
Impulsive:Deliberate
Obstinate:Accommodating
Irresolute:Indecisive
Created: 9 months ago | Updated: 14 hours ago
Radar:Collision
Policeman:Criminal
Obstinate:Accommodating
Irresolute:Indecisive
Created: 9 months ago | Updated: 17 hours ago
canvass:support
adorn:appearnance
testify:conviction
correct:error
Created: 9 months ago | Updated: 1 week ago
Efflorescence
Eflorescence
Efflorascence
Effloresence
Created: 9 months ago | Updated: 1 week ago
belief
Deciet
preview
Receive
is love anything but feelings?
What are the feelings of love?
What a love and feelings?
How feelings are love?
Created: 9 months ago | Updated: 1 day ago
awarencess
motivation
conscious intellectual activity
nightmare
Created: 3 months ago | Updated: 8 hours ago
Strong
tiny
Huge
None
Created: 9 months ago | Updated: 13 hours ago
leave with pay
leave without pay
long leave
. leave without permission
Created: 9 months ago | Updated: 17 hours ago
493
495
492
489
বাংলাদেশ-মায়ানমার
মায়ানমার-চীন
বাংলাদেশ-ভারত
ভারত-মায়ানমার
বেইজিং, চীন
লন্ডন, যুক্তরাজ্য
কুইবেক, কানাডা
ডারবান, দ. আফ্রিকা
পারস্য উপসাগর
আরব সাগর
শাত্- ইল আরব
ওমান উপসাগর
MIGA
IBRD
IDA
IFC
৫টি যথা-ইংরেজি, ফ্রেঞ্চ, রুশ, চীনা ও স্প্যানিশ
৬টি, যথা- ইংরেজি, চীনা, ফ্রেঞ্চ, রুশ, স্প্যানিশ, আরবি
৩টি যথা- ইংরেজি, ফ্রেঞ্চ, জার্মান ও রুশ
৪টি যথা-ইংরেজি, ফ্রেঞ্চ, জার্মান ও রুশ
Created: 9 months ago | Updated: 3 days ago
176
495
274
131
6
১০
12
৭২
১৪৪
416
216
Anyone can bear a cricket kit-bag
Football players also bear cricket kit-bag
Cricket players seldom bear cricket kit-bag
Only cricket players bear cricket kit-bag
Regulatory system lag behind the reality of service exports
While trade legislation exists, it-is uncoordinated
Service trade legislation is a veritable wasteland
Regulatory system ought to reflect the importance of service exports.
14
১১
none of them
১৫
25
৩০
২১
Created: 9 months ago | Updated: 1 day ago
-1
1
2
-2