Indian army has published the notification for SSC Tech 56 men and SSC Tech 27 women for the course commencing at OTA Chennai from April 2021
The following figure contains four containers which have the same amount of water. out of these four, which container will evaporate water slowly?
Q
R
P
S
Why Some scientist use cirrus cloud thinning technique and the injection of sulphate aerosol into the stratosphere?
Reducing the frequency and intensity of tropical cyclones
Reducing global warming
Extraction of rare earth elements
To eradicate acid rain
Arrange the following compounds in order of their boiling points:
i. Pentanol
ii. n-butane
iii. pentanal
iv. ethoxyethane
i>ii>iii>iv
i>iii>iv>ii
i<ii<iv<iii
ii>iii>i>iv
The particles of a colloidal solution of As2S3 is negatively charged. Which solution will be most effective for coagulating this colloidal solution.
NaCl
AlCl3
K4[Fe(CN)6]
Na3PO4
Which of the given methods of depends on differences in boiling points?
fractional distillation and simple distillation
fractional distillation and filtration
simple distillation and paper chromatography
filtration and paper chromatography
