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Gases responsible for green house effect are

Some gases that are responsible for the greenhouse effect are: Carbon dioxide CO2 Methane CH4 Water H2O Nitrous oxide NO Ozone O3... View Article

Molecule having an incomplete octet in the central atom is a) H2O b) NH3 c) PCl5 d) BCl3

Option d) BCl3.... View Article

In ascidia testis is soft thick and transparent it is composed of a) Mucin b) Tunicirine c) Bilirubin d) Porphine

Option b) Tunicirine. Ascidians feature a tough outer tunic made of the polysaccharide cellulose.... View Article

Which factors determine the quality of the note a) frequency b) wavelength c) wave form d) time period

Option c) wave form. The quality of a note depends upon the waveform.... View Article

The solution of 642x−5=4×8x−5 is

Given: As the bases are same, powers must be equal. thus, 12x−30=3x−13 12x−3x=−13+30 x=17/9... View Article

Daily weather changes in the atmosphere are associated with ______. a) troposphere b) stratosphere c) ionosphere d) mesosphere

Option a) troposphere. Most of the weather related phenomenon takes place in this region and is the lowest layer of the Earth.... View Article

What compound of sulphur is obtained when conc.HNO3 oxidises S8

is produced.... View Article

Fill in the blank with the most appropriate word. She heard a ___ at the door and went to see who was outside. a) strike b) hit c) knock d) touch

Option c) knock.... View Article

Which of the following are limitations of range? a) It is not based on all the values. b) It can not be calculated for open-ended frequency distribution. c) As long as the minimum and maximum values remain unaltered, any change in other values does not affect range. d) All of these

Option d) All of these.... View Article

Prove the following sin(2π−x)=−sinx

sin (2π−x)=sin 2π sinx − cos 2π cosx =0 * sinx − 1 * cosx =0 − cosx= −cosx... View Article

Saprophytic plants lack a) Roots b) Chlorophyll c) Flowers d) Vascular tissues

Option b) Chlorophyll. Since they lack Chlorophyll, Saprophytic plants obtain energy from dead and decaying organisms.... View Article

Express your opinion about the use of DNA fingerprinting

The DNA sequences of any two individuals can be compared using DNA fingerprinting. 99.9% of the base sequences in all human beings are identical.... View Article

What are twin primes? write all pairs of twin primes between 50 and 100

Twin primes numbers are pairs of prime numbers that differ by 2. Pairs of twin primes between 50 and 100 are (59, 61) and (71, 73).... View Article

Last-in first-out method is suitable in times of __________. a) Fluctuating Prices b) Falling Prices c) Rising Prices d) None of these

Option c) Rising Prices. This method gives you the highest cost of goods sold and the lowest taxable income.... View Article

BIOS stands for ___. a) Binary Input Output System b) Basic Input Off system c) Basic Input-Output system d) All the above

Option a) Binary Input Output System.... View Article

Malachite is a mineral of: a) Aluminium b) Magnesium c) Iron d) Copper

Option d) Copper.... View Article

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