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1
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क्या होता है, जब मैग्नीशियम धातु, नाइट्रोजन से क्रिया करता है?
asked
Jan 7, 2021
in
Class 12
by
kratos
amines hindi
class-12-hindi
अधातुओ-का-रसायन
class-10
+3
votes
1
answer
Find the sum of the ‘n’ even natural numbers. Hence find the sum of the first 20 even natural numbers.
asked
Jan 8, 2021
in
Class 11
by
kratos
arithmetic progression
class-11
class-10
+2
votes
1
answer
Enlist the species of honey bee mentioning their specific uses.
asked
Jan 3, 2021
in
Class 12
by
kratos
enhancement of food production
class-12
+1
vote
1
answer
वसा का संचय कहाँ होती है ?
asked
Jan 5, 2021
in
Class 11
by
kratos
ऊतक
class-9
class-11
जैविक-अणु
+1
vote
0
answers
For all positive integers n, show that 2nCn + 2nCn-1 = 1/2(2n+2Cn+1)
asked
Jan 7, 2021
in
Class 11
by
kratos
combinations
class-11
+1
vote
1
answer
For a triatomic gas like $CO_(2)$, the ratio$C_(p) //C_(v)$ is equal to $"…................"$
asked
Jan 9, 2021
in
Class 11
by
kratos
p-block-elements
gaseous-state
class-11
chemical-bonding-and-molecular-structure
+2
votes
1
answer
What is revolution?
asked
Jan 5, 2021
in
Class 10
by
kratos
class-10
+2
votes
1
answer
A river 3m deep and 40m wide is flowing at the rate of 2km per hour. How much water will fall into the sea in a minute?
asked
Jan 9, 2021
in
Class 9
by
kratos
class-9
surface areas and volumes of cuboid and cube
surface areas and volumes
volume-and-surface-area-of-solids
surface-area-and-volume
surface-areas-and-volumes
+3
votes
1
answer
Revaluation of assets at the time of reconstitution is necessary because their present value may be different from their:
asked
Jan 5, 2021
in
Class 12
by
kratos
dissolution of partnership firm
class-12
+3
votes
1
answer
If $({:(1, 0),(0, 1):})({:(a, b+c),(b-c, d):}) = ({:(4, -5),(3, 2):})$, then (a-b) + (c-d)=____.
asked
Jan 7, 2021
in
Class 12
by
kratos
matrices
class-12
class-10
+3
votes
1
answer
Difference between Nucleated and Dispersed Settlement.
asked
Jan 8, 2021
in
Class 12
by
kratos
human settlements
land use
class-12
+3
votes
1
answer
Sponges structure corresponding to mouth of other animals is
asked
Jan 5, 2021
in
Class 11
by
kratos
animal-kingdom
class-11
+2
votes
1
answer
Let two fair six-faced dice A and B be thrown simultaneously. If $E_1$ is the event that *** A shows up four, $E_2$ is the event that *** B shows up t
asked
Jan 6, 2021
in
JEE
by
kratos
class-9
jee
class-11
statistics
probability
jee mains
+2
votes
1
answer
Why does lead chloride get precipitated during the chemical reaction between lead nitrate and sodium chloride ?
asked
Jan 4, 2021
in
JEE
by
kratos
class-12
jee
practicals
jee mains
coordination
class-10
coordination compounds
+3
votes
1
answer
……………… is formed in angiosperms by triple fusion.
asked
Jan 2, 2021
in
Class 12
by
kratos
class-12
reproduction in lower and higher plants
+1
vote
1
answer
$10 mL$ of hydrogen combines with $5 mL$ of oxygen to yield water. When $200 mL$ of hydrogen at $STP$ is passed over heated $CuO$, the $CuO$ loses $0.
asked
Jan 9, 2021
in
Chemistry
by
kratos
class-11
mole-concept
some basic concepts of chemistry
+1
vote
1
answer
State and explain the law of dominance as proposed by Mendel.
asked
Jan 8, 2021
in
Class 12
by
kratos
principles of inheritance and variation
chromosomol theory of inheritance
class-12
cbse
mendelian laws of inheritance
+1
vote
1
answer
Use the following data to calculate $Delta_("lattice") H^(c-)$ for NaBr. $Delta_("sub") H^(c-)$ for sodium metal $=108.4 kJ mol^(-1)$ Ioniztion enthal
asked
Jan 6, 2021
in
Class 11
by
kratos
classification-of-elements-and-periodicity-in-properties
class-11
cbse
thermodynamic
thermodynamics
+3
votes
1
answer
Decrease in atomic mnumber is boserved during :
asked
Jan 8, 2021
in
Chemistry
by
kratos
surface chemistry
jee
atomic structure
structure-of-atom
class-10
atomic-structure
class-11
nuclear chemistry
jee mains
icse
+2
votes
1
answer
Saline hydrides react explosively with water, such fires can be extinguished by
asked
Jan 7, 2021
in
Class 11
by
kratos
cbse
hydrogen
class-11
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