Method of sampling and Analysis of Food grains

Question 1

“Terminology of food grains” BIS (Bureau of Indian Standard is

Answer 1

IS: 2813-1995

Question 2

“Method of sampling of cereals and pulses” BIS is

Answer 2

IS:14818:2000

Question 3

“Method of analysis for food grains” BIS no are

Answer 3

IS: 4333 (PART-I) :1996

IS: 4333 (PART-II) : 2002

Question 4

Small equal quantity of grain taken from each individual sampling point throughout the lot is called

Answer 4

Increment

Question 5

Terminology used for one wagaon or one lorry or one ship is

Answer 5

Laden

Question 6

Terminology used for quantity of grains obtained by combining and mixing the increments taken from a specific lot is

Answer 6

Bulk Sample/Composite sample

Question 7

Terminology used for quantity of grains removed from the bulk sample and intenden for analysis or other examination

Answer 7

Laboratory sample/Test sample

Question 8

Instrument required for sampling and analysis is described in BIS

Answer 8

IS 14818:2000

Question 9

Sampling with Parkhi is described in BIS

Answer 9

IS 2816:1964 (R 1994)

Question 10

If the buyer desire to make composite sample without Parkhi he shall have the option to open and sample _______ % of the bags to make it

Answer 10

10

Question 11

In FCI which type of dividers is used for division of sample as BIS 14818:2000

Answer 11

Conical dividers (Boerner type)

Question 12

Conical divider (Boerner type) is calibrated to provide accuracy of ______% between pans on a _______ gm sample

Answer 12

1 , 1000

Question 13

How many pocket are there around the base of the Conical divider (Boerner type)

Answer 13

38 openings or pockets

Question 14

Sensitivity of physical balance is ______mg

Answer 14

5

Question 15

Which four types of IS Sieves shall be used

Answer 15

Top. 4.00 mm

Second from top. 3.35 mm

Third from top. 1.70 mm

Forth from top. 1.00 mm

A solid bottom pan at the bottom

Question 16

Enamelled Plates _____cm in diameter with raised rims

Answer 16

30 cm

Question 17

Height of small scoop should be

Answer 17

Height (mm) - 25

Question 18

Small Scoop Lenght (mm) and Width(mm)

Answer 18

Length - 105 , width-100

Length - 75 , width - 65

Length - 25 , width - 20

Question 19

Forceps of about ______ cm in length

Answer 19

10

Question 20

Magnifying glass with a handle of _______ cm length and having magnifications of _____X

Answer 20

7.5 , 10

Question 21

Dehusk test kit contains

Answer 21

Methylene blue (0.05% by wt)
Dissolve 0.5 Gms in 1000ml of distilled water

HCL - 50ml Lab grade Hcl(approx 36% assay)+ 950 ml distilled water
Metanil yellow. 0.05% by wt)
Dissolve 0.5 Gms in 1000 ml distilled water

Distilled water
Petri dish 80 X 70 mm)
Forceps (about 10 cm in lenght)

Question 22

How many Grams Dehusked grain test done

Answer 22

5 grams (Sound head rice and Broken)

Question 23

Sequence of Dehusk Test of Rice

Answer 23

1. 5 grams rice (sound grain and broken)
   Count total number of grains in 5 gm (3 broken = 1 sound grain
2. 20ml methylene Blue solution for 1min
3. Swirl wash with 20ml HCL (5% HCL solution by volume in distilled water
4. swril wash with water
5. 20ml Metanil yellow solution for 1 min
6. wash with fresh water twice

Question 24

The moisture meter under use shall have a sensitivity of_______

Answer 24

+_0.2%

Question 25

For measurement of lenght and thickness of grain which instrument is used.

Answer 25

**Grain Vernier**

Question 26

Sampling of food grains done from what types of storage

Answer 26

1. Sampling from **Bags** 2. Sampling from **rail** or **raod wagons**, **lorries**, **barges** or **ships** 3. Sampling from **silos**, **Bins** or **Warehouses**

Question 27

Sampling through bags done from no of bags if no of bags in consignment is Upto 10 10 to 100 more than 100 200 bags 500 bags 2000 bags

Answer 27

upto 10 - **Each Bags** 10 to 100 - **10, taken at random** More than 100 - **Square root** (approx of the total number) 200 bags - **Square root** i.e **15 bags** 500 bags- **Square root** i.e **23 bags** 2000 bags - **Suare root** i.e **45 bags**

Question 28

Sampling from rail or road Wagons, barges or ships , the. grains should be samples using a __________ system

Answer 28

**Grid System**

Question 29

Sampling using **grid system** samples are taken according to tonnage are upto 15 tonnes _________Sampling points 15 to 30 tonnes _________Sampling points 30 to 500 tonnes ________Sampling points Above 500 tonnes _____________

Answer 29

Upto 15 tonnes - **5** 15 to 30 tonnes - **8** 30 to 500 tonnes - **11** Above 500 tonnes - **Next whole number of Square root of tonnage/2**

Question 30

Sampling from silos, Bins or warehouse should be sampled using a __________ system Take the ________ of tonnage (in static bulk) ,Divide by ______ and round up to next whole number

Answer 30

**Grid system** , **Square root** , **2**

Question 31

Tonnage, Square root and number of increments of given tonnage are 500- ______Square root , ________no of increments 1000______Square root, _________no of increments 2000______Square root, _________no of increments 4000______Square root, _________no of increments 6000______Square root, _________no of increments 8000______Square root,_________ no of increments 10000_____Square root,_________ no of increments

Answer 31

500---- 22.4 , **12** 1000-- 31.6 , **16** 2000-- 44.7 , **23** 4000-- 63.2 , **32** 6000-- 77.4 , **39** 8000-- 89.4 , **45** 10000-100.0 , **50**

Question 32

A **"Composite Sample"** of about _______Gms shall be drawn on the basis of **IS**___________

Answer 32

**2500** , **2814:1978 & 3714:1978**

Question 33

The composite sample shall be reduced to about ______gms by dividing on a _____________

Answer 33

500 , **Sample divider**

Question 34

**Test sample** weight for **B**arley **M**aize **W**heat **G**ram **O**ther pulses **R** **M**

Answer 34

**B**arley - 500 gms **M**aize. - 500 gms **W**heat - 500 gms **G**ram. - 500 gms **O**ther pulses - 500gms **R** - 250 gms **M** - 250 gms

Question 35

Foreign matter is determined from the _________

Answer 35

**"Test Sample"**

Question 36

Determination of Refraction and foreign matter is through BIS ____________

Answer 36

**IS 4333 (Part-I) -1996**

Question 37

Scooped sample weight (Min) **B**arley **M**aize **W**heat **G**ram **O**ther pulses **R**ice **M**illet

Answer 37

**B**arley - 50gms **M**aize - 50gms **W**heat -50gms **G**ram. - 50gms **O**ther pulses - 25gms **R**ice ----- 20gms **M**illets--- 20gms

Question 38

Determination of **Insect Damaged**(weeviled) grains : IS 4333 (Part I):1996 for **Bigger Size grains** **Smaller size grains**

Answer 38

**Bigger size grains** - **By Number** -measure 20 ml of the representative sample with the help of measuring cylinder **First count** the total number. **Smaller size grains** - Any of the two (method used shall be declared while reporting the result) 1.**Volumetri method** (by Volume)- measure 20ml , picked our and volume of weeviled grain should be measured in same measuring cylinder 2.**Gravimetric method** (be mass) - weight 20 gm of representative sample in a chemical balance with least count of 0.1mg

Question 39

Determination of Moisture Content is described in **BIS**

Answer 39

**IS 4333(PART 2): 2002** , **ISO-712** (except Maize) For **Maize** a separate method is specified in **ISO-6540**

Question 40

In Determination of moisture content **Analytical balance** accuracy is_______ and **Oven temperature** between _______

Answer 40

+-0.001gm 130-133 degree **C**

Question 41

Grinding **Without pre-conditioning** Moisture range is between ________ and ________

Answer 41

**7%** **17%** (15% in oat, paddy and rice)

Question 42

**Grinding with pre-conditioning** temprature below ___________ and above ___________

Answer 42

<**7%** >**17%**

Question 43

**Test portion** for Moisture content is ______ gms

Answer 43

5gms +-1gm

Question 44

For moisture determining ,Drying in the oven and leave for _________ min (**90 min for flours**) from the moment when the oven temperature is ________

Answer 44

**120 min +- 5min** **130 +- 3 degree celcius**

Question 45

Scale of sampling in produce Market(**Mandi**) up to 100 lots------Number of samples_______ 100 to 199 lots-----Number of samples_______ 200 to 399 lots-----Number of samples_______ 400 and above ----Number of samples_______

Answer 45

100 ---- **4** samples (**1** from each grade/Variety) 100 to 199-- **7** samples (**1** from each grade/variety) 200 to 399--**10** samples(**2** from each grade/variety) 400---- **12** samples (**3** from each grade/variety)

Question 46

**"cotton cloth"** Sample bag specification in BIS is:-

Answer 46

**IS 187:1978**

Question 47

Dimension of cotton sample bag is :-

Answer 47

**30 cm X 25 cm** (To hod 2 kg of sample)

Question 48

Specifications of **polythene Sample bag**(film confirming to **grade 001**) for **moisture sample** is according to **BIS**

Answer 48

**IS 2508-1984**

Question 49

The thickness of the **polythene film** to be used for the manufacture of **sample bag** for **moisture sample** shall be between ______ mm and ________mm (**300** to **400** gauge)

Answer 49

**0.075 , 0.100**

Question 50

Dimension for **Polythene** sample **bag** for **moisture sample**

Answer 50

150 mm , 100 mm

Question 51

Order of **Refractions** are

Answer 51

1. Other food grain 2. Damaged 3. Discoloured 4. Insect Damaged 5. Fragments 6. Broken 7. Slightly damaged or touched 8. Chalky (in case of raw rice) 9. Red grains(rice) 10. Kernel with husk 11. Shrivelled or immature 12. Varietal admixture