Guinness World Records (General Knowledge - Page

481

Which of the following Nutrient is incorrectly paired with its function in plant?

A. Iron - cytochromes and chlorophyll B. Molybdenum - cell permeability C. Cobalt - Required by nitrogen fixers D. Calcium - formation of cell wall.

482

For the location / detection of a gene in a DNA library which of the following is used?

A. Primer B. Probe C. Restriction enzyme D. Taq Polymerase

483

The number of chiral centres in a molecular of 5-bromo 3-chloro hexan-2-ol is/are:

A. 1 B. 2 C. 3 D. 4

484

The compound which purely acidic character is:

A. Mg(OH)₂ B. Al(OH)₃ C. Si(OH)₄ D. None of the above

485

Which of the following is a non-sense codon?

A. UGA B. UAU C. CAU D. GAU

486

If a disorder is not present in a child family but the fetus itself is infected before birth, it is known as:

A. Somatic Mutation B. Hereditary mutation C. Germ line mutation D. De novo mutation

487

Work function for a certain surface is 3.26 ev. Minimum frequency, light must have in order to eject electron from surface will be:

A. 1.6 × 10¹⁵ Hz B. 3.2 × 10¹⁵ Hz C. 4.8 × 10¹⁵ Hz D. 6.4 × 10¹⁵ Hz

488

A Radioactive substance has a half-life of 60 minutes. During 3 hours, the percentage of the material that decayed would be:

A. 12.5% B. 87.5% C. 8.5% D. 25.1%

489

While the city has earned record revenue this year, ______ well behind in exports:

A. It still lag B. It still lags C. It lag still D. It lags still

490

The compound which can be hydrolyzed by means of water is:

A. CCl₄ B. SiCl₄ C. CH₄ D. None of the above

491

Which one is a strong nucleophile:

A. C₆H₅-O⁻ B. H-O⁻ C. NH₃ D. C₂H₅-O⁻

492

Choose the correct arrangement of the various regions of the electromagnetic spectrum in terms of wave length.

A. Ir > uv > visible > microwave > radio frequency B. Microwave > ir > visible > uv > radio frequency C. Radio frequency > microwave > ir > visible > uv D. Visible > ir > uv > microwave > radio wave

493

If one of the following components is missing, bacteria can not increase the number of its plasmid copies.

A. Antibiotic resistance gene B. Origin of replication C. Cloning site D. Ligases enzymes

494

Identify the mismatch pair in the following:

A. Cyanobacteria - primary producer B. Grasshopper - primary producer C. Fungi - Decomposer D. Zooplankton - secondary consumer

495

What will happen if a vector (plasmid) is cut with a different restriction enzyme which cuts the external DNA to be incorporated in the vector (plasmid)?

A. Ligation B. No ligation C. Tight ligation D. Cloning

496

In movies during fight a blood red solution is using as an artificial blood. Which of the following complex ion is used for this solution?

A. [Fe(H₂O)₆]²⁺ B. [Cu(NH₃)₄(H₂O)₂]²⁺ C. [Fe(SCN)(H₂O)₅]²⁺ D. [Fe(H₂O)₆]³⁺

497

The compound which can form hydrogen bond with water is:

A. CH₃-O-CH₃ B. CH₃-CH₂-OH C. CH₃-CH₂-NH₂ D. None of the above

498

Sarcolemma is the membrane around?

A. Bone B. Joints C. Muscle fiber D. Heart

499

The deficiency of calcitonin results in?

A. Bone formation B. Kidney stone C. Hyperthyroidism D. Hypothyroidism

500

In which of the following the female workers are sterile?

A. Ants B. Honeybee C. Baboon D. Parrots

Guinness World Records (General Knowledge Focus) MCQs with Answers & Explanations (Page 25)

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