User Forum

Refer to the given flow chart and identify P, Q and R.


AP - Polished mirror Q - Sandpaper R - Oxygen
BP - Cardboard Q - Frosted glass R - Water
CP - Cellophane paper Q - Ceramic tile R - Sunflower oil
DP - Wooden plank Q - Window pane R - Ice

Digestive juices were collected from three different regions of the alimentary canal. Drops of these juices were added to wells made in an agar of starch as shown below.


After an hour, the wells were rinsed with distilled water and flooded with iodine solution. The results are shown below.

Which of the following correctly identifies the regions of the alimentary canal from which the three digestive juices were obtained?

A
B
C
D

Which of the following sets of rocks contain an odd member?

ASandstone, Shale, Conglomerate
BSlate, Marble, Limestone
CShale, Limestone, Sandstone
DQuartzite, Gneiss, Slate

A farmer grows paddy crop in his field for two consequent years. After second year, the yield of paddy crop decreased remarkably. Which agricultural practice should be implemented to increase the paddy yield?

ATilling
BLevelling
CWeeding
DCrop rotation

When a glass rod is rubbed with a piece of silk cloth, the rod ____.

AAnd the cloth both acquire positive charge
BBecomes positively charged, while the cloth has a negative charge
CAnd the cloth both acquire negative charge
DBecomes negatively charged, while the cloth has a positive charge

What is the function of the part labelled as 'X' in the given figure?



AIt produces the ovum when a female reaches puberty.
BIt transports the ovum from the ovary to the uterus.
CIt serves as the site of implantation of the embryo.
DIt is the place where development of embryo takes place.

Read the given passage and fill in the blanks by choosing an appropriate option.
The molar ratio of CO₂ and H₂O produced by the combustion of one mole of hydrocarbon _i_ is 5 : 4. The succeeding homologoue of i is _ii_ while preceding homologoue is _iii_.

Ria's father told her that her mother's father is visiting their place soon. He was talking about her _____.

AUncle
BGrandfather
CGrandmother
DAunt

Gloria is holding her hand quite close to the side of a candle flame without feeling hot. This is because

AAir is a gas and is a poor conductor of heat.
BAir is highly inflammable.
CCandle flame does not produce heat.
DNone of these.

Which of the following statements is incorrect?
(i) The flow of electric current in the circuit is from negative to the positive terminal of the battery.
(ii) Pure water is a good conductor of electricity.
(iii) In the electroplating of copper, copper gets transferred form the anode to the cathode.
(iv) In a dry cell, the electrolyte is a paste of ammonium chloride.

A(i) and (iv) only
B(ii) and (iv) only
C(ii) and (iii) only
D(i) and (ii) only