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The mass number of a nucleus is (a) Always less than its atomic number (b) Always more than its atomic number (c) Sometimes more than and sometimes equal to its atomic number (d) None of the above
2 27785The maximum KE of the photoelectron emitted from a surface is dependent on (a) The intensity of incident radiation (b) The potential of the collector electrode (c) The frequency of incident radiation (d) The angle of incidence of radiation of the surface
1 4350Which of the following is not an essential condition for interference (a) The two interfering waves must be propagated in almost the same direction or the two interfering waves must intersect at a very small angle (b) The waves must have the same time period and wavelength (c) Amplitude of the two waves should be the same (d) The interfering beams of light must originate from the same source.
2 7318When X-Ray photons collide with electrons (a) They slow down (b) Their mass increases (c) Their wave length increases (d) Their energy decreases.
1 6788An electron emits energy (a) Because its in orbit (b) When it jumps from one energy level to another (c) Electrons are attracted towards the nucleus (d) The electrostatic force is insufficient to hold the electrons in orbits.
1 3446In a balanced chemical equation (a) Atoms are conserved (b) Molecules are conserved (c) Moles are conserved (d) Reactant and product molecules are preserved.
1 22695How many grams of NaOH will react with 0.2 equivalent of HCl? (a) 0.59 (b) 0.285 (c) 1.18 (d) none of these.
2 6074Which of the following is least acidic (a) Ortho-cresol (b) Para-cresol (c) Phenol (d) Meta-cresol.
1 4452In Reimer-Tiemann?s reaction, the reaction intermediate is (a) Carbene (b) Dichloro carbene (c) Carbonion (d) Carbonium ion.
1 12009A catalyst (a)always slows down the reaction (b)always starts a rection that would not have ocurred at all otherwise (c)causes changes in the rate of the reaction (d)changes the quantities of the products formed.
1 3747The rate of the first order reaction depends on the (a) Concentration of the reactant (b) Concentration of the product (c) Time (d) Temperature.
1 3437Post New Bio Informatics Questions
Did shuffling of protein constituents occur between systems for multicomponent transport systems such as the atp-binding-cassette or complex protein secretion systems?
What do you think are the more interesting areas of bioinformatics?
How can we find the direction of an nucleotide substitution, for example; C to T or T to C?
Integrate 3x + 5 / (x3-x2-x+1)?
How a cluster algorithm works?
Are all members of transporter families confined to a particular organelle or to the plasma membrane, or are some family members found throughout cellular compartments in eukaryotes?
Will the plant able to produce electricity when the soil is dried up
What is protein sequencing?
Why do you think that bioinformatics is important?
What are oesophageal molecular markers?
How long will a train 100m long traveling at 72kmph take to overtake another train 200m long traveling at 54kmph?
what is a qi number?
What are the main differences between parsimony,distance and likelihood-based algorithms?
How do you find the most recent human sequence data in the data bases inorder to determine physical maps?
what is the principle involved in Biometry?
