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You Are On Multi Choice Question Bank SET 1773
88651. The adhesiveness is the property of a sand due to which
(A): it evolves a great amount of steam and other gases (B): the sand grains stick together (C): it cling to the sides of a moulding box (D): none of these
88652. A stripper-plate machine is used to draw the pattern from the mould.
(A): Yes (B): No
88653. For gas welding, the pressure desired at the welding torch for oxygen is
(A): 7 to 103 kN/m2 (B): 70 to 280 kN/m2 (C): 280 to 560 kN/m2 (D): 560 to 840 kN/m2
88654. Seam weiding is a
(A): continuous spot welding process (B): multi-spot welding process (C): arc welding process (D): process used for joining round bars
88655. In a simple die
(A): two or more operations are performed simultaneously at the single stroke of the ram (B): two or more cutting operations are performed at one station of the press in every stroke of the ram (C): both cutting and non-cutting operations are performed at one station of the press in every stroke of the ram (D): none of the above
88656. The operation of producing cup shaped parts from flat sheet metal blanks by bending and plastic flow of metal, is known as
(A): drawing (B): squeezing (C): coining (D): planishing
88657. Surface plate is used to check the trueness of flat surfaces.
(A): True (B): False
88658. A zinc diffusion process is called
(A): galvanising (B): anodising (C): parkerising (D): sherardizing
88659. The accuracy of micrometers, calipers, dial indicators can be checked by a
(A): feeler gauge (B): slip gauge (C): ring gauge (D): plug gauge
88660. The type of file used for a wood work is
(A): single-cut file (B): double cut file (C): rasp-cut file (D): any one of these
88661. A taper provided on the pattern for its easy and clean withdrawl from the mould is known as
(A): machining allowance (B): draft allowance (C): shrinkage allowance (D): distortion allowance
88662. Which of the following bacterial colonies fluoresce brick-red in UV light?
(A): B gingivalis (B): B melaninogenicus (C): Bacteroides fragilis (D): B levii
88663. Which of the following bacteria is acid-fast?
(A): Actinomyces (B): Nocardia (C): Streptomyces (D): Corynebacterium
88664. Lactobacilli constitute the normal flora of
(A): prepubertal vagina (B): adult vagina (C): post-menopausal vagina (D): none of these
88665. Which of the following bacteria is gram-negative cocci?
(A): Veillonella (B): Peptococcus (C): Peptostreptococcus (D): Sporosarcina
88666. The commonest species of Bacteroides in fragilis group, which causes human infection, is
(A): B vulgatus (B): B fragilis (C): B ovatus (D): B merdae
88667. The commonest bacterial cause of cervicofacial actinomycosis is
(A): A. naeslundii (B): A. viscosus (C): A. israelii (D): A. meyeri
88668. Which of the following bacteria is moderately saccharolytic?
(A): Bacteriodes fragilis (B): B gingivalis (C): B melaninogenicus (D): B levii
88669. Lactobacilli grow best under
(A): strict anaerobic conditions (B): microaerophilic conditions in presence of 5% CO2 and PH6 (C): microaerophilic conditions in presence of 3% CO2 and PH5 (D): microaerophilic conditions in presence of 2% CO2 and PH4
88670. Which of the following genera is included in the family Bacteroi-daceae?
(A): Bacteroides (B): Fusobacterium (C): Leptotrichia (D): All of these
88671. The bacteria which is predominant flora of the human gut is
(A): Escherichia coli (B): Clostridium perfringens (C): Bacteroides (D): Actinomyces
88672. The current genus name of a saccharolytic group of Bacteroides is
(A): Porphyromonas (B): Bacteroides (C): Prevotella (D): None of these
88673. Colonies resembling molar teeth are produced by
(A): Nocardia brasiliensis (B): N. asteroids (C): Actinomyces israelii (D): Actinomadura madurae
88674. Zooxanthellae are algal symbiont that live within coral reef animals. These algae belong to
(A): chlorophyta (B): chrysophyta (C): pyrrophyta (D): rhodophyta
88675. All algae possess
(A): nuclei (B): chloroplasts (C): Both and (D): none of these
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