Q. Which one of the following minerals does not contain Oxygen?
1) Haematite
2) Bauxite
3) Cryolite
4) Calcite
Q. The chemical name of common salt is -
1) Sodium Chloride
2) Sodium Bicarbonate
3) Sodium
4) Sodium Oxide
Q. In an ER diagram, an ellipse represents -
1) Relation
2) Attributes
3) fields
4) Key
Q. Hard copies can be obtained from -
1) Scanner
2) Speaker
3) Printer
4) Recorder
Q. If a wire of resistance R is melted and recast to half of its length, then the new resistance of the wire will be -
1) R/4
2) R/2
3) R
4) 2R
Q. Which of these waves can be polarised?
1) Sound waves in the air
2) Longitudinal wave on a string
3) Transverse waves on a string
4) Light waves
Q. The best example of Polyembryony is -
1) Cocoa
2) Capsicum
3) Citrus
4) Cycas
Q. Which of the following is a chromoprotein?
1) Mucin
2) Haemoglobin
3) Peptones
4) Vitelline
Q. Root Hairs arise from -
1) Cortex
2) Pericycle
3) Epidermis
4) Endodermis
Q. A parenchyma cell that stores ergastic substance is known as -
1) Phragmoblast
2) Idioblast
3) Conidioplast
4) Chloroplast
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