Recent questions without answers

A zero-order liquid phase reaction $A \xrightarrow{k} B$ is being carried out in a batch reactor with $k=10^{-3}$ mol/min. If the starting concentration of $A$ is $0.1$ m...

The interaction energy $E$ between two spherical particles is plotted as a function of the distance $(r)$ between them. When $r<a$, where $a$ is a constant, the net force...

EcoRI restriction sites on a $10$ kb DNA fragment are shown below.Upon partial digestion, what are the lengths (in kb) of all the possible DNA fragments obtained?$2,3,4,5...

A DNA strand of length $25$ nm wraps diametrically around the circumference of a spherical histone-octamer once. The radius (nm) of the histone-octamer is _______Given da...

One hunderd E.coli cells are each infected by a single $\lambda$ phage particle. The ratio of the number of phage particles committing to lysogeny to those committing to ...

During anaerobic growth, an organism converts glucose $(P)$ into biomass $(Q)$, ethanol $(R)$, acetaldehyde $(S)$, and glycerol $(T)$. Every mole of carbon present in glu...

Which of the following conditions promote the development of human autoimmune disorders?Inability to eliminate self-reactive lymphocytesGeneration of auto-antibodiesAbili...

She has a sharp tongue and it can occasionally turn ___________hurtfulleftmethodicalVital

I ________ made arrangements had I _________ informed earlier.could have, been would have, beinghad, havehad been, been

In the summer, water consumption is known to decrease overall by $25\%$. A Water Board official states that in the summer household consumption decreases by $20\%$. While...

$40\%$ of deaths on city roads may be attributed to drunken driving. The number of degrees needed to represent this as a slice of a pie chart is$120$$144$$160$$212$

Some tables are shelves. Some shelves are chairs. All chairs are benches. Which of the following conclusions can be deduced from the preceding sentences?At least one benc...

"If you are looking for a history of India, or for an account of the rise and fall of the British Raj, or for the reason of the cleaving of the subcontinent into two mutu...

S, T, U, V, W, X, Y, and Z are seated around a circular table. T’s neighbours are Y and V. Z is seated third to the left of T and second to the right of S. U’s neighbour ...

Trunks ($10$ m long) and cars ($5$ m long) go on a single lane bridge. There must be a gap of at least $20$ m after each trunk and a gap of at least $15$ m after each car...

A contour line joins locations having the same height above the mean sea level. The following is a contour plot of a geographical region. Contour lines are shown at $25$ ...

Choose the most appropriate word from the options given below to complete the following sentence.The principal presented the chief guest with a _________, as token of app...

Choose the appropriate word/phrase, out of the four options given below, to complete the following sentence:Frogs _________croakroarhisspatter

Choose the word most similar in meaning to the given word:EduceExertEducateExtractExtend

Operators $\square$, $\lozenge$ and $\rightarrow$ are defined by: $a \: \square \: b = \dfrac{a-b}{a+b}$; $a \: \lozenge \: b = \dfrac{a+b}{a-b}$; $a \rightarrow b = ab$....

If $\log_x (5/7) = -1/3$, then the value of $x$ is$343/125$$125/343$$-25/49$$-49/25$

The following question presents a sentence. part of which is underlined. Beneath the sentence you find four ways of phrasing the underlined part. Following the requiremen...

Read the following paragraph and choose the correct statement.Climate change has reduced human security and threatened human well being. An ignored reality of human progr...

Fill in the missing value

A cube of side $3$ units is formed using a set of smaller cubes of side $1$ unit. Find the proportion of the number of faces of the smaller cubes visible to those which a...

Humpty Dumpty sits on a all every day while having lunch. The wall sometimes breaks. A person sitting on the all falls if the wall breaks.Which one of the statements belo...

Which one of the following complement proteins is the initiator of the membrane attack complex$C3a$$C3b$$C5a$$C5b$

Levinthal’s paradox is related toprotein secretionprotein degradationprotein foldingprotein trafficking

Which one of the following is a second generation genetically engineered crop?Bt brinjalRoundup soyabeanGolden riceBt rice

Based on the heavy chain, which one of the following antibodies has multiple subtypes?IgMIgDIgEIgG

The Cytokinetic organelle in plant cells iscentriolePhragmoplastproplastidchromoplastid

Anergy refers tonitochondrial dysfunctionallergy to environmental antigens unresponsiveness to antigensa state of no energy

ABO blood group antigens in humans are differentiated from each other on the basis ofsialic acidlipidsspectringlycoproteins

Which one of the following organisms is used for the determination of phenol coefficient of a disinfectant?Salmonella typhiEscherichia coliCandida albicansBacillus psychr...

A single subunit enzyme converts $420$ $\mu$moles of substrate to product in one minute. The activity of the enzyme is ________ $\times 10^{-6}$ Kalal.

Which one of the following amino acids has the highest probability to be found on the surface of a typical globular protein in aqueous environment?AlaValArgIle

Which one of the following is NOT a product of denitrification in Pseuadomonas?$N_2$$N_2O$$NO_2^-$$NH_4^+$

The determinant of the matrix $\begin{bmatrix} 3 & 0 & 0 \\ 2 & 5 & 0 \\ 6 & -8 & -4 \end{bmatrix}$ is __________

Which one of the following features is NOT required in a prokaryotic expression vector?$\textit{oriC}$Selection markerCMV promoterRibosome binding site

Production of monoclonal antibodies by hybridoma technology requiressplenocytesosteocyteshepatocytesthymocytes