Science Previous Questions from PSC, UPSC, IBPS and SSC

 In the following question, a sentence / a part of sentence is underlined. Below are given alternatives to the underlined part which may improve the sentence. Choose the correct alternative. In case no improvement is required, choose "No Improvement" option.

The match was so very ordinary after all the hype generated by the fans.

A person suffering from long sightedness wears spectacles having:

Have you been doing what has been asks of you

Which one of the following foods is not the functional food ?

Which one of the following functional ingredients improves gastrointestinal health
and also calcium absorption ?

Which one is the poorest method of food freezing ?

The critical electric field strength in Pulsed Electric Field processing for cell wall
rupture of E. coli should be

Which one of the following is not a physical hurdle used in preservation of foods

The difference in UHT pasteurized milk and extended shelf life treated pasteurized
milk is of

The post harvest transportation and storage of banana for distant marketing with
minimum chilling injury is carried out at what temperatures ?

Fruits and vegetables based soups and sauces are categorized as

Which one of the following acids is used to detect vanaspati adulteration in pure
ghee ?

Among the biological hazards, which of the bacteria in food causes infection and not
intoxication ?

Which of the following are not conjugated proteins ?

An article of food shall be deemed to be non-adulterated if

A food product process condition coined by contamination, mixing and processing
under uncontrolled conditions, and rendering it unfit for consumption is referred as

Which of the prepackaging treatments is recommended for potatoes, sweet potatoes,
onions and garlic prior to storage or marketing ?

Parabens, as a group of microbial preservatives, are ineffective especially against
one of the following microorganisms :

The most common adulterant used in coffee is

The most susceptible mineral lost during cooking of food on the basis of presence as
free ions is

The most susceptible to oxidation in a protein molecule are the SH groups of which
amino acid ?

Arrange the following compounds in the increasing order of their UV absorption
maxima :

a. Ethylene           b. Naphthalene
c. Anthracene       d. 1, 3-Butadiene
Choose the correct order.

The correct IUPAC name for the following compound is

What is the major product in the following reaction ?

Three flasks A, B and C respectively contain 0.1 M, 0.1 m and 0.1 N aqueous HC1
solutions, prepared at 40°C. Considering the density of water = 1 &/CM³ at 4⁰C,
which of the following statements is/are correct ?
a. Concentration of all three solutions is exactly the same.
b. Concentration of HCL in flask A and flask C is exactly the same.
c. Concentration of HCL in flask B is lesser than concentration of HCL in flasks A
and C.
d. No two flasks have HCl of exactly the same concentration.

A compound X C₇H₈0 is insoluble in water, dil HCI and aqueous NaHC0₃ but
dissolves in dil NaOH. When X is treated with bromine water, it is converted rapidly
into a compound of formula C₇H₅0Br₃. The structure of X is
47.

Match the columns :
Group I                                       Group II
a. Surfadants                            I. Alkylaryl sulphonates
b. Dye intermediates                II. Benzene
c. Lacquers                              III. Cellulose acetate
d. Solvents                               IV. Ethyl acetate
                                                 V. Anthracene

The correct order of increasing stability of carbonium ion is

Which of the following is the best method for preparation of common detergent
sodium dodecyl benzene sulphonate (C) ?

The correct IUPAC name for the given structure is