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সকল বিষয়

Created: 3 months ago | Updated: 12 hours ago
π2
π
π4
-π4
 π6
cott2
tant2
tan t
cot t
none of them
12
13
14
1
none of them
αx+βy=α2+β2
αx+βy=2αβ
αy+βx=2αβ
αy+βx=α2+β2
none of them
y=mx-am
y=mx+am
y=mx+am
y=ma-am
none of them
Created: 3 months ago | Updated: 1 month ago
-12
12
1
-1
13
Created: 3 months ago | Updated: 1 month ago

ylogx-1n

3ylogx-2

logx-3y

ylogx-1x3

ylogx-1nx2

v0t+v0K1-e-kt
v0t+v01-e-kt
v0t+v0Ke-kt-1
v0t+v0e-kt-1
none of them
a,2,b,3
a,3,b,3
a,3,b,2
a,2,b,2
none of them
α1+β
11+α
β1+β
 β1+α
none of them
x2+y2-10x±21y+21=0
x2+y2-10x±221y+21=0
x2+y2-10x±221y±21=0
x2+y2-10x±21y+21=0
x2+y2-10x±21y-21=0
174
12
1
-1
13
4.5 km
6.67 km
8.5 km
8 km
none of them
2.82 days
4.584 days
5.86 days
5.06 days
none of them
6.33×10-11 M
6.54×10-11 M
6.75×10-11 M
8.4×10-11 M
8.81×10-11 M
9.03×1023
3.01×1023
9.03×1024
3.01×1024
6.01×103
O2<O2+<O2-
O2+<O2-<O2
O2-<O2< O2+
O2<O2-<O2+
none of them
5.0-6.0, 6.5-8.5 ppm, 6.0 ppm, 500 ppm, 10.0 ppm
6.5-8.5, 5.0-6.0 ppm, 6.0 ppm, 10.0 ppm, 500 ppm
6.5-8.5, 5.0-6.0 ppm, 10.0 ppm, 6.0 ppm, 500 ppm
5.0 - 6.0, 6.5 - 8.5ppn , 6.0 ppm, 10.0 ppm, 500 ppm
none of them
100 - 300mg / L Chromium; 100-500mg/L Sulphide
100 - 300mg / L Chromium: 200-500mg/L Sulphide
100 - 300mg / L Chromium; 200-800mg/L Sulphide
none of them
As2O3>AsH3>AsO2->AsO43-
AsH3>AsO2->As2O3>AsO43-
AsH3>As2O3>AsO2>AsO43-
AsO43->As2O3>AsO2->AsH3
AsO3>AsO43->AsH3
Nitroglycerine and TNT
Nitroglycerine and NH4NO3
TNT and NH4NO3
TNT and HNO3
Nitroglycerine and DNT
ZnCl2+HCl
Zn+HCl
HNO3
HNO2
KMnO4
0.01 M
1×10-5 M
4.83×10-3 M
1.22×10-7 M
4.83×10-8M
3.23×10-7 kg C-1
2.33×10-7 kg C-1
3.33×10-7 kg C-1
4.31×10-7 kg C-1
3.00×10-7 kg C-1
3.6×1023
6.0×1023
3.7×1022
3.3×1024
3.0×1025
1.90×105 ppm
1.90×103 ppm
1.16×104 ppm
11.61×106 ppm
2.90×105 ppm
CH2=CH2
CHCl=CHCl
C6H5-CH=CH2
CF2=CF2
CH2=CHCl
If you buy one mobile, you get another mobile free
If you buy one mobile, you get one free
A mobile free on purchase of one mobile
Buy one mobile to get one free
None
Created: 3 months ago | Updated: 6 days ago
It seemed impossible that he could escape
Only those boys who will work hard will succeed
He not only made a promise but kept it
He kept the promise he had made
Even he is cruel but I like him
Created: 3 months ago | Updated: 1 week ago
Unexposed
obvious
languid
Manifest
Sensible
Created: 3 months ago | Updated: 1 month ago
Flying outside the window, he grabbed the papers.
Flying out of the window, he grabbed the papers.
Flying the window, the papers were grabbed him.
Flying out the window, the papers grabbed by him.
Flying out the window, the papers were grabbed by him.
I would
I would have
I should have
I should
I have had
He said, "Bangladesh has won the ICC T20 world cup".
He said, "Bangladesh won the ICC T20 world cup".
He said, "How! Bangladesh won the ICC T20 world cup".
He said, "Hurrah! Bangladesh has won the ICC T20 world cup".
He said, "Jeer! Bangladesh has won the ICC T20 world cup".
Created: 3 months ago | Updated: 2 weeks ago
Disappear
Misleading
agreement
Clumsiness
Consort
Let the grass be keep off
Let keep off the grass
Do not keep of the grass.
The grass should be keep off
You are requested to keep off the grass
He request his friend, Jashim please help him.
Addressing Jashim as his friend, he requested him (Jashim) to help him.
He requested Jashim to help him.
he requested his friend to help him.
He prayed Jashim as his friend to help him.
Not only, on the other hand
However, on the other hand
While, above on
not only, but also
All of above.
The sun is the lamp of the universe.
Has the sun been the lamp of the universe.
The sun is, as it were, the lamp of the universe.
The sun would be the lamp of the universe.
As if sun is the lamp of the universe.
Created: 3 months ago | Updated: 2 weeks ago
তুমি আজ না গেলে ভাল হত।
তুমি আজ নাইবা গেলে।
তুমি আজ না গেলেও পারতে
তোমার আজ না যাওয়াই ঠিক ।
তোমার আজ যাওয়া ভাল নয় ।
were training
has been training
have been training
been training
had been training
Noun phrase
Prepositional phrase
Adjective phrase
Adverbial phrase
Conjunctional phrase
get up
to get up
getting up
to getting up
geting up
Distributives
Interrogative
relative
personal
indefinite
numeral
Descriptive
Quantitative
Pronominal
compound
adjective
adverb
Interjection
Preposition
Emphatic pronoun
Created: 4 months ago | Updated: 1 month ago
View seen by birds
A view of the sky
An interesting idea
A rough idea
An intensive idea
Created: 4 months ago | Updated: 2 weeks ago
aren't I
is it
am not I
am I
am I not
in
into
to
on
with
Created: 4 months ago | Updated: 1 month ago
Some animals may be able to sense and approaching earthquake.
By observing animal behavior, scientists perhaps can predict earthquakes.
The Chinese have successfully predicted an earthquake and saved many lives the quake.
All birds and dogs in a ten-kilometer radius of the epicenter went wild before the quake.
The Chinese Government was able to evacuate millions of people and thus keep the death toll at a lower level in 1976.
12
5
১১
none of them
-λ
λ
1λ
-1λ
none of them
Cure
Sound-health
Full-cure
Disease less
Panacea

He is a wise man.

All the members present in the meeting were against the proposal.

The man is not strong enough to carry the load.

He paid the bus fare.

We enjoyed a football match yesterday.

Created: 3 months ago | Updated: 6 days ago
Animals are smarter than human.
Animals have certain instincts that human doesn't prossess.
By running around the house, they can feel the vibrations.
Human doesn't know where to look.
An animal has sharper ear than human.

5020.5 ms-1

4995.5 ms-1

4027.5 ms-1

5169.5 ms-1

516.95 ms-1