Recently Active Disucss Test Question Questions

A radioactive element decays by two parallel reactions, the decay constants for which are λ<sub>1 and λ<sub>2. The effective decay constant(λ) of the nuclide is ...

The time of decay for a nuclear reaction is given by t=4t<sub>1/2. The relation between the mean life(T) and time of decay(t) is given by t= ...

A sample of a radioisotope (t<sub>1/2=4 days) was taken. After 16 days, 3g of the sample was left. What was the initial mass of the sample? ...

The rate of decay of a radioactive sample is given by R<sub>1 st time t<sub>1, and R<sub>2 at a later time t<sub>2. The mean life of this radioactive sample is ...

In radioactive decay, the emitted electrons come from the ...

Aldol condensation of propanal gives ...

Identify the orbital hybridization at the two indicated carbons in the molecule below: (H<sub>3C)H-C1=C2=O ...

What orbitals are involved in the bond that connects the methyl group to the double bond in propene ...

What is the hybridization of the carbon atoms in allene or 1,2-propadiene ...

The compound having one C-C σ bond , one C-C π bond and four C-H σ bonds is ...

1,3-Butadiene has ...

What is the hybridization of the carbon atom in Urea? ...

A--- α decay ---> B --- α decay ---> C --- β decay --->D <br> Which of the following are true? ...

if Z decreases by 10 and A decreases by 32, which could be possible: ...

Which is the most dangerous? ...

What is the most common explanation of the treason behind a radiation? ...

The penetration order of α,β,γ are: ...

When a nucleus undergoes a radioactive decay (αβγ), which of the following is true? ...

α radiation is: ...

Among α,β and γ beams, deflection in an electric field perpendicular to the beam will have least deflection for? ...

Among α,β and γ rays, which will face the maximum deflection in an electric field perpendicular to the beam? ...

Among α,β and γ rays, the ionizing power is in which order? ...

Find the equation of the median of the traingle with vertices (0,0), (1,6), (6,2) through (1,6) ...

the triangle formed by 2x+y=6; x+2y=6 and x+y=6 is. ...

If y intercept of a line is 5 and ⊥ to x+3y=0; The equation is of this line is: ...

If (a,2a), (1,1) and (3,2) are collinear, a=? ...

If (0,0) and (3,4) are two diagonally off vertices of a squate. Which of the following could be another vertex? ...

A point at a distance 5 from (3,2) on the line 3x+4y=17 is ...

Find the line at a distance 5 from origin and forming an angle of sin-1(3/5) ...

Find the line passing through the mid point of the segments formed by joining (2,2) with (4,2) and (6,4) with (10,6) ...